Inverse secant problem

[Jan Hill]

Homework Statement

Find the value of y = sec^-1(9s^4 + 7) with respect to s

Homework Equations

The Attempt at a Solution

secy = 9s^4 + 7

but where do I go from here?

 

[tiny-tim]

Hi Jan!

(try using the X² icon just above the Reply box )

Are you trying to find s in terms of y?

Then continue by rearranging your final equation, putting s on the left.

EDIT: ohhh! … are you trying to find the derivative of y with respect to s?

then differentiate your final equation, using the chain rule for the LHS. ​