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# Intergration by Substitution Question watch

1. Hey,
I have this intergration of substitution question which is has limits [5,2]
and using : u^2=x-1

1/(1+(1-x)^0.5) dx

I get something like

2u/(1+u) du with limits [2,1] and made that into 0.5[(1+u^-1)]

Thanks.
2. (Original post by Sekonda)
Hey,
I have this intergration of substitution question which is has limits [5,2]
and using : u^2=x-1

1/(1+(1-x)^0.5) dx

I get something like

2u/(1+u) du with limits [2,1] and made that into 0.5[(1+u^-1)]

Thanks.
This is all correct, apart from the last (bold) statement.

Use partial fractions to change 2u/1+u into two parts (of the form )

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