Question

help
intergrate from x=0 to x=1, 1 devide by [(x+1)powerd by 2][((x powered by 2)+ 1]

Answer 1

\[\int\limits_{}^{}1/((x+1)^2(x^2+1) dx\]

Answer 2

that's it, how did you write it simply like that ?

Answer 3

click on Equation below your textbox .. left corner

Answer 4

so do you have the solution ?

Answer 5

no ...
http://www.wolframalpha.com/input/?i=integrate+1%2F%28%281%2Bx%29%5E2+%281%2Bx%5E2%29%29

Answer 6

partial fractions big pain in the neck

Answer 7

can you do it ?

Answer 8

no

Answer 9

but are you able to work it out ?

Answer 10

yes, idea is to write
\[\frac{1}{(x+1)^2(x^2+1)}=\frac{a}{x+1}+\frac{b}{(x+1)^2}+\frac{cx+d}{x^2+1}\]

Answer 11

how is that simplified ?

Answer 12

then solve for the coefficients a, b, c and d. it is a big pain in the neck. will get a system of linear equations to solve
i would cheat and look here
http://www.wolframalpha.com/input/?i=1%2F%28%28x%2B1%29%5E2%28x%5E2%2B1%29%29
where is says "partial fraction expansion"
if you want the method click on "show steps"

Answer 13

once you see it you will realize why i said "no"

Answer 14

how about \[\int\limits_{?}^{?}1\div(5+3cosx) dx\]

Answer 15

help