maths
posted by albert on .
f(x)=ln(e^xe^x), x>0
By applying in turn the Composite and Quotient Rules, find derivative and second derivative.
Thanks.

f '(x) = (e^x + e^x)/(e^x  e^x)
= e^x(e^(2x) + 1)/(e^x(e^(2x)  1)
= (e^(2x) + 1)/(e^(2x) 1)
now use the quotient rule to get the second derivative,
let me know what you got.