Saturday, April 30, 2016

calculus - Integral of 4x(1+x)5 without partial fractions



The question is asking me to do 04x(1+x)5dx




My question is, is there any way to do this without partial fractions. If there is a formula for equations of this type, I will gladly memorize it, I just don't think I'll have time to partial fraction expand a question like this on the P exam.


Answer



Let u=1+x, then du=dx and so your integral is now
u=14(u1)u5du=41(u4u5)du=13


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