Question

Use a pythagorean Trig. Identity to simplify the function, then take derivative of this function. f(x) = 4x^2 tan x

Answer 1

We remember that tanx can be described as sinx over cos x

Answer 2

ok?

Answer 3

I suppose that would simplify it a little bit if you dont know what the derivative of tanx is already but thats the only trig transformation I can see

Answer 4

okay so how would i do this?

Answer 5

Well if you want to take the derivative of sinx over cosx then you would need to use the quotient rule

Answer 6

ok

Answer 7

i got sin(x))^2/(cos(x))^2 + 1

Answer 8

@zepdrix can u help?