#1) d/dx(2 sin x)/(1+cos x) = [(1+cosx)(2cosx)-2sinx(-sinx)] / [1+cosx]^2
Hi. It's been some time since I've done any trig work. BTW, I'm sorry to doublepost in the calc forum, meant to post here.
Could anyone guide me through these particular problems?
I need the derivatives of the following:
1. (2 sin x)/(1+cos x)
2. (5 tan x)/(x)
3. (-8xsinxcosx)
4. (tan x - 3)/(sec x)
Also, can anyone briefly tell me what the following are equal to?
sin^2 x
cos^2 x
tan^2 x
sec^2 x
And then, how to use them in conjunction with each other.
Well, where in what I did was the error? I'm so lost
To tell you the truth, the last HS math I took in full was geometry. I had a quick refresher in College Algebra and now I'm in a calculus course. I follow the calc fine so long as the stuff I skipped isn't brought up. I can follow general principles, but I have alot of holes in my background. I'm working to fix them, but failing this hw won't help me do that :/
I -really- want to learn everything I've missed and excel in math, but with nothing to really work with, hard to find help, and lack of proper examples, I can not figure this stuff out.
I know this stuff isn't difficult, but without knowing all the rules, that doesn't matter...