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Question

If (1i1+i)50=x+iy ,then find the value of (x,y).

A
(0,1)
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B
(1,0)
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C
(0,i)
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D
(1,0)
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Solution

The correct option is D (1,0)
(1i1+i)50=x+iy(1i1+i×1i1i)50=x+iy(2i2)50=x+iy(i)50=(i)4×12+2(i)4×12(i)2=1+0iSo,(x,y)=(1,0)

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