Question

How would you integrate 13 sec^4x with b=pi/4 and a=-I/4

Answer 1

what are a and b here?

Answer 2

we need to find the integration for sec ^4 x

Answer 3

Let u=tan(x)

Answer 4

Then du=(tan(x))′dx

Answer 5

=sec^2(x)dx

Answer 6

we have that sec^2(x)dx=du

Answer 7

so we can write the expression as