XXXXXXXXXXIntegrate
15. Find the derivative of y =
16. Find the derivative of y =

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XXXXXXXXXXIntegrate    15.    Find the derivative of  y = 16.   Find the derivative of  y =

Robert · Accepted Answer

14.      Integrate    
Let ex + e-x = p
So, (ex - e-x) dx = dp
I = ∫dp/p = ln p + k = ln(ex + e-x) + k
15.    Find the derivative of  y = 
Applying chain rule, we get
dy/dx = (1-ex)/(1+ex)[(1-ex)ex – (1+ex)(-ex)]/(1-ex)2 = 2ex/(1-e2x)
16.   Find the derivative of  y =

XXXXXXXXXXIntegrate 15. Find the derivative of y = 16. Find the derivative of y =

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