Tuesday, October 29, 2013

What are x and y if (3x+2iy)-(y-2ix)-2x=3-2i ?

We have (3x+2iy)-(y-2ix)-2x=3-2i and we need to find x and
y.


(3x + 2iy) -(y - 2ix) - 2x = 3 -
2i


=> 3x + 2iy - y + 2ix - 2x = 3 -
2i


=> x - y + 2i(x + y) = 3 -
2i


equate the real and imaginary
coefficients


x - y = 3 and x + y =
-1


adding the two


2x =
2


=> x = 1


y =
-2


The solution is x = 1 and y =
-2

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