CBSE Class 11-science Answered
prove that
Asked by | 19 Jul, 2008, 06:37: PM
Expert Answer
let z= x+iy
then x2+y2=1 since | z |=1
z-1=(x-1)+iy
z+1=(x+1)+iy
real of (z-1)/(z+1) = ( (x-1)*(x+1) +y2 ) / ( (x+1)2+y2 ) ( bu multipling complex conjugate of (z+1) to numerator and denominator )
numerator of this real part is x2+y2-1 which is zero so (z-1)/(z+1) is purely imaginary.
Answered by | 10 Aug, 2008, 04:54: PM
CBSE 11-science - Maths
Asked by benganigaurav24 | 10 Jul, 2021, 10:05: PM
ANSWERED BY EXPERTCBSE 11-science - Maths
Asked by sahabya | 29 May, 2010, 02:55: PM
ANSWERED BY EXPERTCBSE 11-science - Maths
Asked by abhishek11 | 25 May, 2010, 07:11: PM
ANSWERED BY EXPERTCBSE 11-science - Maths
Asked by prashant.jain | 24 May, 2010, 12:43: PM
ANSWERED BY EXPERTCBSE 11-science - Maths
Asked by sidhusid | 18 May, 2010, 07:14: AM
ANSWERED BY EXPERTCBSE 11-science - Maths
Asked by MANOJKUMAR | 15 May, 2010, 01:33: PM
ANSWERED BY EXPERTCBSE 11-science - Maths
Asked by dandirao | 15 May, 2010, 12:19: PM
ANSWERED BY EXPERTCBSE 11-science - Maths
Asked by varunsinghal2011 | 09 May, 2010, 03:45: PM
ANSWERED BY EXPERT
