differentiate y=sec? tan?

Question

Please help me 

Answer 1

Do you want to find the derivative of sec(x) * tan(x)?

 

If that is the case, try using the alternate versions of sec and tan.

 

sec(x) = 1 / cos(x)

 

tan(x) = sin(x) / cos(x)

 

You are left with sin(x) / cos²(x)

 

Now you can use the division rule with the chain rule to figure it out.

 

Good luck!