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Grade: 11
        
Number of solution(s) of the equation           |z|^2 + 7z = 0 is/are
6 months ago

Answers : (2)

Deepak Kumar Shringi
askIITians Faculty
4370 Points
							put z=x+iy
and |z|=(x2+y2)1/2
then real part and img part to both side equate
6 months ago
Aditya Gupta
1105 Points
							
We see that
-|z|^2/7= z, which means that z is real and less than or equal to zero. So modz= -z
So equation becomes
-z^2=7z
Or z= 0 or -7
6 months ago
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