Mining Engineering > GATE 2020 > Calculus
For the value of w=et-t/et+t dw/dt is
A
2et(t2+1)/(et-t2)2
B
2et(t-1)/(et+t)2
C
2et(t2-1)/(et+t2)2
D
2et(t+1)/(et-t)2

Correct : b

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