Question

Find the derivative of the function. Assume a and b are not zero. Use lower case letters.
y(t) = cot(at + b)

Answer 1

I know you need to use the chain rule, but I have no idea how to do the derivative of cot(x)

Answer 2

Quotient Rule?
Since its cot(at+b) perhaps you need to use
http://www.craig-wood.com/nick/images/math/ba59c45582fef5d43cb00b4239b38ea4.png

Answer 3

mmmm I haven't calculus in such a long time but I think it's just \[-a \times \csc^{2} (at+b)\]

Answer 4

it's like one of the ones you need to memorize I believe.

Answer 5

haha ok, thanks!! Ill try it...

Answer 6

that was correct