Hi, I need some help on this trig integral problem. Can anyone tell me how to start this? I know I need to use some kind of identity to change the sec to cos or sin? Thank you.
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Originally Posted by abilitiesz Hi, I need some help on this trig integral problem. Can anyone tell me how to start this? I know I need to use some kind of identity to change the sec to cos or sin? Thank you. $\displaystyle \int 54x^4sec^4(x^5)dx$ $\displaystyle 54\int x^4(sec^2(x^5))(sec^2(x^5))dx$ $\displaystyle 54\int x^4(sec^2(x^5))(1+tan^2(x^5))dx$ Can you take it from here?
Yes, I can take it from there. Thank you. I figured it out.
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