Question

what the derivative of 2arctan(2x) ?

Answer 1

\[2( \frac{1}{1+4x^2})*2\]

Answer 2

4[1/(1+4x^2)]

Answer 3

can you explain a little better how you got that?

Answer 4

\[{d \over dx }\tan ^{-1}x=/1+x^2\]

Answer 5

apply this formula for 2arctan(2x)

Answer 6

instead of x, here we have 2x, so by chain rule next we multiply with the derivative of 2x, that is 2

Answer 7

is it helpful?

Answer 8

yes how did you get 4x^2?

Answer 9

since instead of x,we have 2x.so (2x)^2=4x^2

Answer 10

ok?

Answer 11

ahhh gotcha...