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
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Originally Posted by keith 5sinx/(1+cosx) Use the product rule.
Originally Posted by Krizalid Use the product rule. I looked over the problem and noticed it should have been: (1+cosx)(5cosx) not -(5cosx) Thanx anyway
Originally Posted by keith (1+cosx)(5cosx) If you wanna derive this, then just expand Then apply simple rules of derivation.
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