Fact: Using the substitution uπ-x, one can show that
Use the fact given above to evaluate the integral
(* ≈ ƒ (sin x) dz = ½ ſ˜ ƒ(sin x) dr.
-5x sin(x)
1+ cos²(x)
dx
![Fact Using the substitution uπx one can show that Use the fact given above to evaluate the integral ƒ sin x dz ſ ƒsin x dr 5x sinx 1 cosx dx class=](https://us-static.z-dn.net/files/d83/97587db15021a31dabed26bbc1447d87.png)