Question

Does anyone know the integral of cos(2x)?

Answer 1

yes, it's like chain rule but you divide instead of multiplying

Answer 2

1/2 sin(2x)

Answer 3

:O Thanksomuch

Answer 4

You could also derive it by substituting:\[\int\cos(2x)dx,\]\(u=2x\), \(du=2dx\),\[\frac{1}{2}\int\cos(u)du=\frac{1}{2}\sin(2x).\]

Answer 5

... + c

^^