### Home > CALC > Chapter 7 > Lesson 7.3.1 > Problem7-110

7-110.

Careful. e is NOT a variable.

Let u = sinx.

Notice that the term in parentheses has a highest-power of x³, while the term outside of the parenthesis has a power of x².
U-substitution!

Refer to the hint in part (c).

What is the derivative of y = lnx?

Inverse trig.