InterviewSolution
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InterviewSolution
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show that a-=B anu -a.ху18) Ifx+iy= (a+ib)”, show that * + =4185= 1-i, show that (5a-7b) = 0.a+3i19) If 2+ib-3i)(2-3i)latib20) If xtiy= Vc+id'a²+b2prove that (x2+y2)2 =ber.c2+d?1+i21) If (a+ib) =, then prove that (a +b) =1;tik22) Show thatT-id})=is rea |
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Answer» 20) if a+3i/2+ib=1-i, show that (5a-7b)=0;; a+3i= (1-i)(2+ib) a+3i=2+b+1(b-2); equating real and imaginary parts; a=2+b 3=b-2; b=5; a=7; 5a-7b=35-35=0 |
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