حمّل تطبيق منهاجي الجديد

منهاجي صار أسرع من خلال التطبيق

  أتدرب وأحل المسائل

أتدرب وأحل المسائل

الأعداد المركبة

أجد قيمة الجذر الرئيس في كلّ ممّا يأتي بدلالة i :

(1) begin mathsize 20px style square root of negative 19 end root end style

begin mathsize 20px style square root of negative 19 end root equals square root of negative 1 cross times 19 end root equals square root of negative 1 end root cross times square root of 19 equals i square root of 19 end style

(2)  begin mathsize 20px style square root of fraction numerator negative 12 over denominator 25 end fraction end root end style

 begin mathsize 20px style square root of negative 12 over 25 end root equals square root of negative 1 cross times 12 over 25 end root equals square root of negative 1 end root cross times square root of 12 over 25 end root equals fraction numerator 2 square root of 3 over denominator 5 end fraction i end style

(3) begin mathsize 20px style square root of fraction numerator negative 9 over denominator 32 end fraction end root end style

begin mathsize 20px style square root of negative 9 over 32 end root equals square root of negative 1 cross times 9 over 32 end root equals square root of negative 1 end root cross times square root of 9 over 32 end root equals fraction numerator 3 over denominator 4 square root of 2 end fraction i end style

(4) begin mathsize 20px style square root of negative 53 end root end style

begin mathsize 20px style square root of negative 53 end root equals square root of negative 1 cross times 53 end root equals square root of negative 1 end root cross times square root of 53 equals i square root of 53 end style

 

أجد ناتج كلّ ممّا يأتي في أبسط صورة مفترضاً أنّ begin mathsize 20px style square root of bold minus bold 1 end root bold equals bold italic i end style :

(5) i26

begin mathsize 20px style i to the power of 26 equals left parenthesis i squared right parenthesis to the power of 13 equals negative 1 end style

(6) i39

 begin mathsize 20px style i to the power of 39 equals left parenthesis i squared right parenthesis to the power of 19 cross times i equals left parenthesis negative 1 right parenthesis to the power of 19 cross times i equals negative i end style

(7) begin mathsize 20px style left parenthesis i right parenthesis left parenthesis 2 i right parenthesis left parenthesis negative 7 i right parenthesis end style

begin mathsize 20px style left parenthesis i right parenthesis left parenthesis 2 i right parenthesis left parenthesis negative 7 i right parenthesis equals left parenthesis 2 i squared right parenthesis left parenthesis negative 7 i right parenthesis equals left parenthesis negative 2 right parenthesis left parenthesis negative 7 i right parenthesis equals 14 i end style

(8) begin mathsize 20px style square root of negative 6 end root cross times square root of negative 6 end root 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 square root of negative 6 end root cross times square root of negative 6 end root end cell cell equals square root of negative 1 cross times 6 end root cross times square root of negative 1 cross times 6 end root end cell row blank cell equals i square root of 6 cross times i square root of 6 end cell row blank cell equals 6 i squared equals negative 6 end cell end table end style

(9) begin mathsize 20px style square root of negative 4 end root cross times square root of negative 8 end root 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 square root of negative 4 end root cross times square root of negative 8 end root end cell cell equals square root of negative 1 cross times 4 end root cross times square root of negative 1 cross times 8 end root end cell row blank cell equals 2 i cross times 2 square root of 2 i end cell row blank cell equals 4 square root of 2 i squared equals negative 4 square root of 2 end cell end table end style

(10) begin mathsize 20px style 2 i cross times square root of negative 9 end root 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 2 i cross times square root of negative 9 end root equals end cell cell 2 i cross times square root of negative 1 cross times 9 end root end cell row blank cell equals 2 i cross times 3 i end cell row blank cell equals 6 i squared equals negative 6 end cell end table end style

 

أكتب في كلّ ممّا يأتي العدد المركب z بالصورة القياسية:

(11) begin mathsize 20px style fraction numerator 2 plus square root of negative 4 end root over denominator 2 end fraction end style

begin mathsize 20px style fraction numerator 2 plus square root of negative 4 end root over denominator 2 end fraction equals fraction numerator 2 plus 2 i over denominator 2 end fraction equals 1 plus i end style

(12) begin mathsize 20px style fraction numerator 8 plus square root of negative 16 end root over denominator 2 end fraction end style

begin mathsize 20px style fraction numerator 8 plus square root of negative 16 end root over denominator 2 end fraction equals fraction numerator 8 plus 4 i over denominator 2 end fraction equals 4 plus 2 i end style

(13) begin mathsize 20px style fraction numerator 10 minus square root of negative 50 end root over denominator 5 end fraction end style

begin mathsize 20px style fraction numerator 10 minus square root of negative 50 end root over denominator 5 end fraction equals fraction numerator 10 minus 5 i square root of 2 over denominator 5 end fraction equals 2 minus i square root of 2 end style

 

أحدد الجزء الحقيقي والجزء التخيلي لكلّ من الأعداد المركبة الآتية، ثم أمثلها جميعاً في المستوى المركب نفسه:

(14) z = 2 + 15i

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 z cell equals 2 plus 15 i end cell row blank cell not stretchy rightwards arrow R e invisible function application left parenthesis z right parenthesis equals 2 space comma space I m invisible function application left parenthesis z right parenthesis equals 15 end cell end table end style

(15) z = 10i

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 z equals 10 i end cell row blank cell not stretchy rightwards arrow R e invisible function application left parenthesis z right parenthesis equals 0 space comma space I m invisible function application left parenthesis z right parenthesis equals 10 end cell end table end style

(16) z = -16 - 2i

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 z cell equals negative 16 minus 2 i end cell row blank cell not stretchy rightwards arrow R e invisible function application left parenthesis z right parenthesis equals negative 16 space comma space I m invisible function application left parenthesis z right parenthesis equals negative 2 end cell end table end style

 

أمثل العدد المركب ومرافقه بيانياً في المستوى المركب في كل ممّا يأتي:

(17) z = -15 + 3i

begin mathsize 20px style z with bar on top end style = -15 – 3i

الأعداد المركبة

(18) z = 8 - 7i

begin mathsize 20px style z with bar on top end style = 8 + 7i

الأعداد المركبة

(19) z = 12 + 17i

begin mathsize 20px style z with bar on top end style = 12 – 17i

الأعداد المركبة

(20) z = -3 - 25i

begin mathsize 20px style z with bar on top end style = -3 + 25i

الأعداد المركبة

(21) 3i

begin mathsize 20px style z with bar on top end style = – 3i

الأعداد المركبة

(22) 15

begin mathsize 20px style z with bar on top end style = 15

الأعداد المركبة

 

أجد begin mathsize 20px style z with not stretchy bar on top text  ، end text vertical line z vertical line end sty  لكل ممّا يأتي:

(23) z = -5 + 5i

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 z equals negative 5 plus 5 i end cell row blank cell z with not stretchy bar on top equals negative 5 minus 5 i end cell row blank cell vertical line z vertical line equals square root of left parenthesis negative 5 right parenthesis squared plus left parenthesis 5 right parenthesis squared end root equals 5 square root of 2 end cell end table end style

(24) z = 3 - 3i begin mathsize 20px style square root of 3 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 z equals 3 plus 3 square root of 3 i end cell row blank cell z with not stretchy bar on top equals 3 minus 3 square root of 3 i end cell row blank cell vertical line z vertical line equals square root of left parenthesis 3 right parenthesis squared plus left parenthesis 3 square root of 3 right parenthesis squared end root equals square root of 9 plus 27 end root equals 6 end cell end table end style

(25) z = 6 - 8i

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 z equals 6 minus 8 i end cell row blank cell z with not stretchy bar on top equals 6 plus 8 i end cell row blank cell vertical line z vertical line equals square root of left parenthesis 6 right parenthesis squared plus left parenthesis negative 8 right parenthesis squared end root equals square root of 36 plus 64 end root equals 10 end cell end table end style

 

 

إعداد : شبكة منهاجي التعليمية

19 / 01 / 2023

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