(3,4)(1,2)=(3x1-4x2,4x1+3x2)=(3-8,4+6)=(-5,10)=5(-1,2)
所以复数也有乘法交换律
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复数的乘法交换律
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(1,2)(3,4)=(1x3-2x4,2x3+1x4)=(3-8,6+4)=(-5,10)=5(-1,2)
 
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The author has 1 post.
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(1,2)(3,4)=(1x3-2x4,2x3+1x4)=(3-8,6+4)=(-5,10)=5(-1,2)
(3,4)(1,2)=(3x1-4x2,4x1+3x2)=(3-8,4+6)=(-5,10)=5(-1,2) 所以复数也有乘法交换律
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