حمّل تطبيق منهاجي الجديد

منهاجي صار أسرع من خلال التطبيق

  أتحقق من فهمي

أتحقق من فهمي

المتجهات في الفضاء

نظام الأحداثيات ثلاثي الأبعاد

أتحقق من فهمي صفحة (111):

أعين كلاً من النقاط الآتية في نظام الأحداثيات ثلاثي الأبعاد:

begin mathsize 20px style left parenthesis negative 3 comma 2 comma 4 right parenthesis end style (a)

حل a

begin mathsize 20px style left parenthesis 1 comma 0 comma negative 4 right parenthesis end style (b)

حل b

begin mathsize 20px style left parenthesis 5 comma negative 4 comma negative 2 right parenthesis end style (c)

حل c

begin mathsize 20px style left parenthesis negative 4 comma negative 2 comma 3 right parenthesis end style (d)

حل d


المسافة بين نقطتين، وإحداثيات نقطة المنتصف في الفضاء

أتحقق من فهمي صفحة (113):

إذا كانت: begin mathsize 20px style bold italic N bold left parenthesis bold 2 bold comma bold 1 bold comma bold minus bold 6 bold right parenthesis bold comma bold italic M bold left parenthesis bold 5 bold comma bold minus bold 3 bold comma bold 6 bold right parenthesis end style، فأجد كلاً مما يأتي:

(a) المسافة بين N وM.

begin mathsize 20px style table attributes columnalign right left right left right left right left right left right left columnspacing 0em 2em 0em 2em 0em 2em 0em 2em 0em 2em 0em end attributes row cell N M end cell cell equals square root of left parenthesis x subscript 2 minus x subscript 1 right parenthesis squared plus left parenthesis y subscript 2 minus y subscript 1 right parenthesis squared plus left parenthesis z subscript 2 minus z subscript 1 right parenthesis squared end root end cell row blank cell equals square root of left parenthesis 5 minus 2 right parenthesis squared plus left parenthesis negative 3 minus 1 right parenthesis squared plus left parenthesis 6 minus left parenthesis negative 6 right parenthesis right parenthesis squared end root equals square root of 9 plus 16 plus 144 end root equals square root of 169 equals 13 end cell end table end style

(b) إحداثيات نقطة منتصف Error converting from MathML to accessible text..

لتكن K منتصف القطعة المستقيمة Error converting from MathML to accessible text.، فتكون:

begin mathsize 20px style K equals left parenthesis fraction numerator x subscript 1 plus x subscript 2 over denominator 2 end fraction comma fraction numerator y subscript 1 plus y subscript 2 over denominator 2 end fraction comma fraction numerator z subscript 1 plus z subscript 2 over denominator 2 end fraction right parenthesis equals left parenthesis fraction numerator 2 plus 5 over denominator 2 end fraction comma fraction numerator 1 minus 3 over denominator 2 end fraction comma fraction numerator negative 6 plus 6 over denominator 2 end fraction right parenthesis equals left parenthesis 7 over 2 comma negative 1 comma 0 right parenthesis end style


مقدار المتجه في الفضاء

أتحقق من فهمي صفحة (114):

إذا كان: begin mathsize 20px style A left parenthesis negative 1 comma 5 comma 3 right parenthesis comma B left parenthesis negative 5 comma 3 comma negative 2 right parenthesis end style، فأكتب المتجه begin mathsize 20px style stack A B with rightwards arrow on top end style بالصورة الإحداثية، ثم أجد مقداره.

begin mathsize 20px style table attributes columnalign right left right left right left right left right left right left columnspacing 0em 2em 0em 2em 0em 2em 0em 2em 0em 2em 0em end attributes row blank cell stack A B with rightwards arrow on top equals left angle bracket x subscript 2 minus x subscript 1 comma y subscript 2 minus y subscript 1 comma z subscript 2 minus z subscript 1 right angle bracket equals not stretchy left angle bracket minus 5 minus left parenthesis negative 1 right parenthesis comma 3 minus 5 comma negative 2 minus 3 not stretchy right angle bracket equals not stretchy left angle bracket minus 4 comma negative 2 comma negative 5 not stretchy right angle bracket end cell row blank cell vertical line stack A B with rightwards arrow on top vertical line equals square root of v subscript 1 superscript 2 plus v subscript 2 superscript 2 plus v subscript 3 superscript 2 end root equals square root of 16 plus 4 plus 25 end root equals square root of 45 equals 3 square root of 5 end cell end table end style


جمع المتجهات وطرحها وضربها في عدد حقيقي هندسياً

أتحقق من فهمي صفحة (116):

متوازي الأضلاعفي متوازي الأضلاع ABCD المجاور، إذا كانت F نقطة منتصف Error converting from MathML to accessible text.، وG نقطة منتصف Error converting from MathML to accessible text.، وكانت: begin mathsize 20px style stack bold B bold D with bold rightwards arrow on top bold equals bold a with bold rightwards arrow on top end style، وكانت: begin mathsize 20px style stack bold A bold D with bold rightwards arrow on top bold equals bold b with bold rightwards arrow on top end style، وكانت: begin mathsize 20px style bold italic A bold italic E bold equals bold 3 bold italic E bold italic B end style، فاكتب كلاً مما يأتي بدلالة begin mathsize 20px style bold a with bold rightwards arrow on top end style وbegin mathsize 20px style bold b with bold rightwards arrow on top end style:

begin mathsize 20px style stack A B with rightwards arrow on top end style (a)

begin mathsize 20px style table attributes columnalign right left right left right left right left right left right left columnspacing 0em 2em 0em 2em 0em 2em 0em 2em 0em 2em 0em end attributes row cell stack A B with rightwards arrow on top end cell cell equals stack A D with rightwards arrow on top plus stack D B with rightwards arrow on top end cell row blank cell equals straight b with rightwards arrow on top plus left parenthesis negative straight a with rightwards arrow on top right parenthesis end cell row blank cell equals straight b with rightwards arrow on top minus straight a with rightwards arrow on top end cell end table end style

begin mathsize 20px style stack E B with rightwards arrow on top end style (b)

begin mathsize 20px style table attributes columnalign right left right left right left right left right left right left columnspacing 0em 2em 0em 2em 0em 2em 0em 2em 0em 2em 0em end attributes row blank cell A B equals A E plus E B equals 3 E B plus E B equals 4 E B not stretchy rightwards double arrow E B equals 1 fourth A B end cell row blank cell stack E B with rightwards arrow on top equals 1 fourth stack A B with rightwards arrow on top end cell row blank cell not stretchy rightwards double arrow stack E B with rightwards arrow on top equals 1 fourth left parenthesis straight b with rightwards arrow on top minus straight a with rightwards arrow on top right parenthesis equals 1 fourth straight b with rightwards arrow on top minus 1 fourth straight a with rightwards arrow on top end cell end table end style

begin mathsize 20px style stack E F with rightwards arrow on top end style (c)

begin mathsize 20px style stack E F with rightwards arrow on top equals stack E B with rightwards arrow on top plus stack B F with rightwards arrow on top equals stack E B with rightwards arrow on top plus 1 half stack B C with rightwards arrow on top end style

وذلك لأن begin mathsize 20px style stack B C with rightwards arrow on top equals stack A D with rightwards arrow on top end style كون الشكل متوازي الأضلاع begin mathsize 20px style equals stack E B with rightwards arrow on top plus 1 half stack A D with rightwards arrow on top end style

begin mathsize 20px style table attributes columnalign right left right left right left right left right left right left columnspacing 0em 2em 0em 2em 0em 2em 0em 2em 0em 2em 0em end attributes row blank cell equals 1 fourth straight b with rightwards arrow on top minus 1 fourth straight a with rightwards arrow on top plus 1 half straight b with rightwards arrow on top end cell row blank cell equals 3 over 4 straight b with rightwards arrow on top minus 1 fourth straight a with rightwards arrow on top end cell end table end style


جمع المتجهات وطرحها وضربها في عدد حقيقي جبرياً

أتحقق من فهمي صفحة (117):

إذا كان: Error converting from MathML to accessible text.، فأجد كلاً مما يأتي:

begin mathsize 20px style 3 straight v with rightwards arrow on top minus 4 straight u with rightwards arrow on top end style (a)

begin mathsize 20px style table attributes columnalign right left right left right left right left right left right left columnspacing 0em 2em 0em 2em 0em 2em 0em 2em 0em 2em 0em end attributes row cell 3 straight v with rightwards arrow on top minus 4 straight u with rightwards arrow on top end cell cell equals 3 not stretchy left angle bracket 3 comma 0 comma negative 5 not stretchy right angle bracket minus 4 not stretchy left angle bracket 4 comma 5 comma negative 3 not stretchy right angle bracket end cell row blank cell equals not stretchy left angle bracket 9 comma 0 comma negative 15 not stretchy right angle bracket minus not stretchy left angle bracket 16 comma 20 comma negative 12 not stretchy right angle bracket equals not stretchy left angle bracket minus 7 comma negative 20 comma negative 3 not stretchy right angle bracket end cell end table end style

begin mathsize 20px style 3 straight u with rightwards arrow on top plus 5 straight v with rightwards arrow on top minus 2 straight w with rightwards arrow on top end style (b)

begin mathsize 20px style table attributes columnalign right left right left right left right left right left right left columnspacing 0em 2em 0em 2em 0em 2em 0em 2em 0em 2em 0em end attributes row cell 3 straight u with rightwards arrow on top plus 5 straight v with rightwards arrow on top minus 2 straight w with rightwards arrow on top end cell cell equals 3 not stretchy left angle bracket 4 comma 5 comma negative 3 not stretchy right angle bracket plus 5 not stretchy left angle bracket 3 comma 0 comma negative 5 not stretchy right angle bracket minus 2 not stretchy left angle bracket 9 comma negative 2 comma negative 5 not stretchy right angle bracket end cell row blank cell equals not stretchy left angle bracket 12 comma 15 comma negative 9 not stretchy right angle bracket plus not stretchy left angle bracket 15 comma 0 comma negative 25 not stretchy right angle bracket plus not stretchy left angle bracket minus 18 comma 4 comma 10 not stretchy right angle bracket equals not stretchy left angle bracket 9 comma 19 comma negative 24 not stretchy right angle bracket end cell end table end style


تساوي المتجهات

أتحقق من فهمي صفحة (117):

إذا كان: begin mathsize 20px style u with not stretchy rightwards arrow on top equals not stretchy left angle bracket 20 comma 2 p minus 5 comma negative 12 not stretchy right angle bracket comma v with not stretchy rightwards arrow on top equals not stretchy left angle bracket 3 q plus 8 comma 0 comma 3 r not stretchy right angle bracket end style، وكان: begin mathsize 20px style straight u with rightwards arrow on top equals straight v with rightwards arrow on top end style، فأجد قيمة كل من begin mathsize 20px style r comma q comma p end style.

begin mathsize 20px style table attributes columnalign right left right left right left right left right left right left columnspacing 0em 2em 0em 2em 0em 2em 0em 2em 0em 2em 0em end attributes row cell straight u with rightwards arrow on top equals straight v with rightwards arrow on top end cell cell not stretchy rightwards double arrow 20 equals 3 q plus 8 space comma space 2 p minus 5 equals 0 space comma space minus 12 equals 3 r end cell row blank cell not stretchy rightwards double arrow q equals 4 comma p equals 5 over 2 comma r equals negative 4 end cell end table end style


متجها الموقع والإزاحة

أتحقق من فهمي صفحة (119):

إذا كانت: begin mathsize 20px style bold italic A bold left parenthesis bold minus bold 2 bold comma bold 8 bold comma bold 13 bold right parenthesis bold comma bold italic B bold left parenthesis bold 5 bold comma bold minus bold 7 bold comma bold minus bold 9 bold right parenthesis bold comma bold italic C bold left parenthesis bold 0 bold comma bold 1 bold comma bold minus bold 14 bold right parenthesis end style نقاطاً في الفضاء، فأجد كلاً مما يأتي:

(a) متجه موقع كل من النقاط: A وB وC.

begin mathsize 20px style stack O A with rightwards arrow on top equals not stretchy left angle bracket minus 2 comma 8 comma 13 not stretchy right angle bracket comma stack O B with rightwards arrow on top equals not stretchy left angle bracket 5 comma negative 7 comma negative 9 not stretchy right angle bracket comma stack O C with rightwards arrow on top equals not stretchy left angle bracket 0 comma 1 comma negative 14 not stretchy right angle bracket end style

(b) متجه الإزاحة من النقطة B إلى النقطة C.

begin mathsize 20px style stack B C with rightwards arrow on top equals stack O C with rightwards arrow on top minus stack O B with rightwards arrow on top equals not stretchy left angle bracket minus 5 comma 8 comma negative 5 not stretchy right angle bracket end style

(c) المسافة بين النقطة A والنقطة C.

begin mathsize 20px style table attributes columnalign right left right left right left right left right left right left columnspacing 0em 2em 0em 2em 0em 2em 0em 2em 0em 2em 0em end attributes row cell A C end cell cell equals square root of left parenthesis x subscript 2 minus x subscript 1 right parenthesis squared plus left parenthesis y subscript 2 minus y subscript 1 right parenthesis squared plus left parenthesis z subscript 2 minus z subscript 1 right parenthesis squared end root end cell row blank cell equals square root of left parenthesis 0 minus left parenthesis negative 2 right parenthesis right parenthesis squared plus left parenthesis 1 minus 8 right parenthesis squared plus left parenthesis negative 14 minus 13 right parenthesis squared end root equals square root of 4 plus 49 plus 729 end root equals square root of 782 end cell end table end style


كتابة المتجه بدلالة متجهات الوحدة الأساسية

أتحقق من فهمي صفحة (121):

اكتب كلاً من المتجهات الآتية بدلالة متجهات الوحدة الأساسية:

begin mathsize 20px style straight g with rightwards arrow on top equals not stretchy left angle bracket 9 comma 0 comma negative 4 not stretchy right angle bracket end style (a)

begin mathsize 20px style straight g with rightwards arrow on top equals 9 straight i with not stretchy hat on top minus 4 straight k with not stretchy hat on top end style

begin mathsize 20px style stack A B with rightwards arrow on top colon A left parenthesis 2 comma negative 1 comma 4 right parenthesis comma B left parenthesis 7 comma 6 comma negative 2 right parenthesis end style (b)

begin mathsize 20px style stack A B with rightwards arrow on top equals not stretchy left angle bracket 7 minus 2 comma 6 minus left parenthesis negative 1 right parenthesis comma negative 2 minus 4 not stretchy right angle bracket equals not stretchy left angle bracket 5 comma 7 comma negative 6 not stretchy right angle bracket equals 5 ı with not stretchy hat on top plus 7 ȷ with not stretchy hat on top minus 6 straight k with not stretchy hat on top end sty

begin mathsize 20px style 4 straight m with rightwards arrow on top minus 5 straight f with rightwards arrow on top colon straight m with rightwards arrow on top equals negative 2 straight i with not stretchy hat on top plus 3 straight j with not stretchy hat on top minus 4 straight k with not stretchy hat on top comma straight f with rightwards arrow on top equals 3 straight i with not stretchy hat on top minus 5 straight j with not stretchy hat on top plus 6 straight k with not stretchy hat on top end style (c)

begin mathsize 20px style table attributes columnalign right left right left right left right left right left right left columnspacing 0em 2em 0em 2em 0em 2em 0em 2em 0em 2em 0em end attributes row cell 4 straight m with rightwards arrow on top minus 5 straight f with rightwards arrow on top equals end cell cell 4 left parenthesis negative 2 straight i with not stretchy hat on top plus 3 ȷ with not stretchy hat on top minus 4 straight k with not stretchy hat on top right parenthesis minus 5 left parenthesis 3 straight i with not stretchy hat on top minus 5 ȷ with not stretchy hat on top plus 6 straight k with not stretchy hat on top right parenthesis end cell row blank cell equals left parenthesis negative 8 minus 15 right parenthesis straight i with not stretchy hat on top plus left parenthesis 12 plus 25 right parenthesis ȷ with not stretchy hat on top plus left parenthesis negative 16 minus 30 right parenthesis straight k with not stretchy hat on top end cell row blank cell equals negative 23 straight i with not stretchy hat on top plus 37 ȷ with not stretchy hat on top minus 46 straight k with not stretchy hat on top end cell end table end s


إيجاد متجه وحدة في اتجاه أي متجه

أتحقق من فهمي صفحة (122):

أجد متجه وحدة في اتجاه كل متجه مما يأتي:

begin mathsize 20px style straight u with rightwards arrow on top equals not stretchy left angle bracket 4 comma negative 3 comma 5 not stretchy right angle bracket end style (a)

begin mathsize 20px style table attributes columnalign right left right left right left right left right left right left columnspacing 0em 2em 0em 2em 0em 2em 0em 2em 0em 2em 0em end attributes row cell vertical line straight u with rightwards arrow on top vertical line end cell cell equals square root of 16 plus 9 plus 25 end root end cell row blank cell equals square root of 50 end cell row blank cell equals 5 square root of 2 end cell row cell straight u with hat on top end cell cell equals fraction numerator 1 over denominator 5 square root of 2 end fraction straight u with rightwards arrow on top equals left angle bracket fraction numerator 4 over denominator 5 square root of 2 end fraction comma fraction numerator negative 3 over denominator 5 square root of 2 end fraction comma fraction numerator 5 over denominator 5 square root of 2 end fraction right angle bracket end cell row blank cell equals left angle bracket 2 over 5 square root of 2 comma fraction numerator negative 3 over denominator 5 square root of 2 end fraction comma fraction numerator 1 over denominator square root of 2 end fraction right angle bracket end cell end table end style

وهذا متجه وحدة في begin mathsize 20px style straight u with rightwards arrow on top end style

begin mathsize 20px style straight v with rightwards arrow on top equals 8 straight i with not stretchy hat on top plus 15 straight j with not stretchy hat on top minus 17 straight k with not stretchy hat on top end style (b)

begin mathsize 20px style table attributes columnalign right left right left right left right left right left right left columnspacing 0em 2em 0em 2em 0em 2em 0em 2em 0em 2em 0em end attributes row blank cell vertical line straight v with rightwards arrow on top vertical line equals square root of 64 plus 225 plus 289 end root end cell row blank cell equals square root of 578 equals 17 square root of 2 end cell row blank cell table attributes columnalign right left right left right left right left right left right left columnspacing 0em 2em 0em 2em 0em 2em 0em 2em 0em 2em 0em end attributes row cell straight v with not stretchy hat on top equals end cell cell fraction numerator 1 over denominator 17 square root of 2 end fraction straight v with rightwards arrow on top equals fraction numerator 8 over denominator 17 square root of 2 end fraction straight i with not stretchy hat on top plus fraction numerator 15 over denominator 17 square root of 2 end fraction straight j with not stretchy hat on top minus fraction numerator 17 over denominator 17 square root of 2 end fraction straight k with not stretchy hat on top end cell row blank cell equals fraction numerator 8 over denominator 17 square root of 2 end fraction straight i with not stretchy hat on top plus fraction numerator 15 over denominator 17 square root of 2 end fraction straight l with not stretchy hat on top minus fraction numerator 1 over denominator square root of 2 end fraction straight k with not stretchy hat on top end cell end table end cell end table end style

وهذا متجه وحدة في begin mathsize 20px style straight v with rightwards arrow on top end style

begin mathsize 20px style stack A B with rightwards arrow on top colon A left parenthesis negative 1 comma 4 comma 6 right parenthesis comma B left parenthesis 3 comma 3 comma 8 right parenthesis end style (c)

begin mathsize 20px style table attributes columnalign right left right left right left right left right left right left columnspacing 0em 2em 0em 2em 0em 2em 0em 2em 0em 2em 0em end attributes row blank cell stack A B with rightwards arrow on top equals not stretchy left angle bracket 3 minus left parenthesis negative 1 right parenthesis comma 3 minus 4 comma 8 minus 6 not stretchy right angle bracket equals not stretchy left angle bracket 4 comma negative 1 comma 2 not stretchy right angle bracket end cell row blank cell vertical line stack A B with rightwards arrow on top vertical line equals square root of 16 plus 1 plus 4 end root equals square root of 21 end cell end table end style

ليكن begin mathsize 20px style straight u with hat on top end style متجه وحدة في اتجاه begin mathsize 20px style stack A B with rightwards arrow on top end style، فيكون:

 begin mathsize 20px style straight u with hat on top equals fraction numerator 1 over denominator square root of 21 end fraction stack A B with rightwards arrow on top equals left angle bracket fraction numerator 4 over denominator square root of 21 end fraction comma fraction numerator negative 1 over denominator square root of 21 end fraction comma fraction numerator 2 over denominator square root of 21 end fraction right angle bracket end style

إعداد : شبكة منهاجي التعليمية

10 / 07 / 2023

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