Question

Integrate du/sec(u).

Answer 1

Is it sin(u)?

Answer 2

@dan815

Answer 3

Yes, you are right..

Answer 4

sec= 1/cos

Answer 5

so ye sin u

Answer 6

\[\frac{1}{\sec(u)} = \cos(u)\]

Answer 7

+c

Answer 8

Thank you guys!

Answer 9

Dan is a professional integrator.