- #1
Deathfish
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- 0
Homework Statement
e∫^P(x)
∫[itex]\frac{x-2}{x(x-1)}[/itex]dx
The Attempt at a Solution
so i split it into
∫[itex]\frac{x-2}{x(x-1)}[/itex]dx
= ∫[itex]\frac{2x-1}{x^2-x}[/itex]dx - ∫[itex]\frac{x+1}{x^2-x}[/itex]dx
= ln(x2-x) - ∫[itex]\frac{x}{x^2-x}[/itex] - ∫(x2-x)-1
= ln(x2-x) - ln(x-1) - ∫(x2-x)-1
ok. having problems working out ∫(x2-x)-1dx
tried many ways but i keep ending up with the original integral.
u=x-1 --> du=-x-2
dv= (x-1)-1dx --> v=ln(x-1)
gives me ([itex]\frac{1}{x}[/itex])ln(x-1) + ∫[itex]\frac{ln(x-1)}{x^2}[/itex]dx
when i work this out
∫[itex]\frac{ln(x-1)}{x^2}[/itex]dx
u=ln(x-1) --> du=[itex]\frac{1}{x-1}[/itex]
dv=x-2dx --> v=-x-1
i get
∫[itex]\frac{ln(x-1)}{x^2}[/itex]dx = [itex]\frac{-ln(x-1)}{x}[/itex] + ∫(x2-x)-1
which is the same integral and above and i get no solution.
Need help...