aprilanahi
How to find the integral of tan^4(x)sec^2(x)(dx)



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hartnn
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put u=tan x
du= .. ?

aprilanahi
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Sec^2x

aprilanahi
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(Dx)

hartnn
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so, after substituting u= tan x
what will be the new integral you get in terms of 'u' ?

aprilanahi
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U^4 (du)

hartnn
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can you evaluate that ?

aprilanahi
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(tan^5x)/5 +c

hartnn
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correct! good :)

aprilanahi
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find the derivative of sin[ln(cosx^3)]