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If 6i−3i143i−1203i=x+iy, then :

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a

x=3,y=1

b

x=1,y=3

c

x=0,y=3

d

x=0,y=0

answer is D.

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Detailed Solution

∵ 6i−3i143i−1203i =6i+40043i−1203i(R1→R1+R2)=(6i+4)3i−13i=(6i+4)(3i2+3)=0Put 6i−3i143i−1203i=x+i y⇒0+0i=x+iy⇒x=0,y=0

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If 6i−3i143i−1203i=x+iy, then :