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junior college 1 | H2 Maths
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junior college 1 chevron_right H2 Maths chevron_right Singapore

Need help with this integration question. Answer is in the brackets. Thanks in advance!

Date Posted: 5 months ago
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Zoe Chua
Zoe Chua's answer
4 answers (Tutor Details)
Take note of the recall and differentiation I have added. Hopefully this will help you
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Eric Nicholas K
Eric Nicholas K's answer
2352 answers (Tutor Details)
The easiest way to do this is to recognise that sec2x is a derivative form of tan x, so we can use the substitution u = tan x for this.

This is easier than changing sec2x into 1 + tan2x, because the integrals tan3x and tan5x are not immediately clear.