- #1

bubbles

- 97

- 0

## Homework Statement

[tex]\int cos(1/2)x = 2sin(x/2) + c[/tex] ==> Correct Answer

This is an answer to one of my homework problems, but I don't understand why the indefinite integtral of cos(1/2)x is that. I've learned u-substitution and the power rule, but using those methods, I got:

**2. The attempt at a solution**[tex] u = .5x, du = .5dx \int cos(u)du = sin(u)+c = sin(.5x)+c[/tex] (wrong answer?)