Here is another one I am stuck on.

5sinx/(1+cosx)

this is what I did:

(1+cosx)d/dx[5sinx]-(5sinx)d/dx[1+cosx]/(1+cosx)^2

([1+cos(x)]*(-5)*cos(x)-[5+sin(x)]*[-sin(x)])/([1+cos(x)]^2)

Where did I go wrong here?

Thank you!

Keith

Printable View

- Aug 25th 2007, 11:56 AMkeithderivaties of Trigonometric Functions
Here is another one I am stuck on.

5sinx/(1+cosx)

this is what I did:

(1+cosx)d/dx[5sinx]-(5sinx)d/dx[1+cosx]/(1+cosx)^2

([1+cos(x)]*(-5)*cos(x)-[5+sin(x)]*[-sin(x)])/([1+cos(x)]^2)

Where did I go wrong here?

Thank you!

Keith - Aug 25th 2007, 12:00 PMKrizalid
- Aug 25th 2007, 12:48 PMkeith
- Aug 25th 2007, 12:51 PMKrizalid