+0

# Need help...

0
141
1
+7711

Find $$\displaystyle \int^{1}_{-1} \sin\left(\dfrac{e^x - e^{-x}}{2}\right)\; dx$$

Substituting u = -x yields something similar. What should I do?

Jun 24, 2019

#1
+28130
+5

Notice that the integrand is an odd function i.e. if f(x) = sin(sinh(x)) then f(-x) = -f(x).  This means the integral of f(x) from -1 to +1 is zero.

Jun 24, 2019