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Recent questions tagged complex-number
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1
GATE2013-23
Square roots of $-i$,where $i=\sqrt{-1}$, are $i,-i$ $\cos(-\frac{\pi }{4} )+i\sin(-\frac{\pi }{4})+\cos(\frac{3\pi }{4})+i\sin(\frac{3\pi }{4})$ $\cos(\frac{\pi }{4} )+i\sin(\frac{3\pi }{4})+\cos(\frac{3\pi }{4})+i\sin(\frac{\pi }{4})$ $\cos(\frac{3\pi }{4} )+i\sin(-\frac{3\pi }{4})+\cos(-\frac{3\pi }{4})+i\sin(\frac{3\pi }{4})$
asked
Feb 12, 2017
in
Complex Variables
by
piyag476
(
1.5k
points)
gate2013-ee
complex-number
trigonometry
0
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0
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2
GATE2014-1-GA-4
If $(z+1/z)^2 = 98,$ compute $(z^2+1/z^2).$
asked
Feb 12, 2017
in
Linear Algebra
by
makhdoom ghaya
(
9.3k
points)
gate2014-ee-1
complex-number
numerical-answers
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