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AP EAMCET · Maths · Complex Number

If x-13+i+y-13-i=i then the true statement among the following is

  1. A x<0,y<0
  2. B x<0,y>0
  3. C x>0, y<0
  4. D x>0,y<0
Verified Solution

Answer & Solution

Correct Answer

(B) x<0,y>0

Step-by-step Solution

Detailed explanation

x-13+i+y-13-i=i ⇒x-13-i+y-13+i=i3+i3-i ⇒3x-3-ix+i+3y-3+iy-i=10i ⇒3x+3y-6-ix+iy=10i ⇒y-x=10 & x+y-2=0 i.e. x=-4, y=6