3.2 Trigonometric Integrals

[STARTS AT 1:58]

Instructor: We have sine to the fourth x cosine x, dx. It's set up differently, so we'll go ahead-- we will use u equals sine x. That way, du is just a single cosine x, dx. We don't have to adjust anything here. 

So we can write this integral as the integral of u to the fourth, dx, or du. That's going to replace the cosine, which will be u to the fifth over 5, using our power rule, plus c. And that is sine to the fifth x over 5 plus c. 

[ENDS AT 2:39]