Question

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

Answer 1

@Mertsj can u help?

Answer 2

Is it:
\[4x^2\tan x\]

Answer 3

yes

Answer 4

\[\tan x=\sqrt{1-\sec ^2x}\]

Answer 5

That's using a Pythagorean identity.

Answer 6

ok

Answer 7

So you would be taking the derivative of
\[4x^2\sqrt{1-\sec ^2x}\]

Answer 8

okay i'll do that

Answer 9

ok

Answer 10

i got 4x(x + sin(2x)) sqrt(tan^2 (x)) csc (x) sec (x)