Chemical Engineering > GATE 2014 > Complex Analysis
If f*(x) is the complex conjugate of f(x)=cos(x)+isin(x), then for real a and b, ∫abf*(x)f(x)dx is ALWAYS
A
positive
B
negative
C
real
D
imaginary

Correct : c

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complex conjugate integral GATE Chemical Engineering 2014 complex conjugate integral real complex conjugate imaginary GATE 2014 chemical complex conjugate definite integral complex conjugate properties GATE chemical engineering questions

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