Question

someone help step by step..

derivative of
sin^2(x)+cos^2(x)/x

Answer 1

Is the WHOLE thing over x or just cos^2(x)?

Answer 2

whole thing over x

Answer 3

Do you notice any trigonometric identities? :) .

Answer 4

sin^2(x)+cos^2(x)=1

Answer 5

yep :) So it's really the derivative of 1/x isn't it?

Answer 6

yes.

Answer 7

that's as far as i got.

Answer 8

Which is x^-1 . You can use the power rule to differentiate.