Question

[25 + 50 cos (2x)] dx

any thoughts?

Answer 1

Hint: Let U=2x and remember the chain rule the derivative of the inside times the derivative of the function.

Answer 2

technially it's an integral pi/3...0 [25 + 50 cos(2x)]dx

Answer 3

Oh this is an integral. This is then S25dx +50Scos(2x)dx. The "S" is my integral sign. No let u=2X so du will equal 2dx.

Answer 4

so it should be
x + 25sin(x) ?

Answer 5

Yes but you need to multiply x by 25 and you need to substitute 2x back in for u so it will be 25x + 25sin(2x) +c. You were on the right track though.

Answer 6

i'm so bad at these... i get it up to the stupid derivitive part