### Home > CALC > Chapter 7 > Lesson 7.3.2 > Problem 7-123

7-123.

Let *u* = sin(*x*).

*k*sin(3*x* − 2) + *C*

What is *k*?

Use *u*-substitution. Careful choosing a *u*.

Who has the higher power: *x*^{−3} or *x*^{−4}?

Before integrating, rewrite the square root term in the integrand with a fractional exponent.