help with this integral plis

[vegeta]

hi i'm new. This forum it very good for people what try to learn something of math like me.
well i need help with this integral.

integral (x³-5x+3)ln(x) dx

thanks

 

[DrPhil]

hi i'm new. This forum it very good for people what try to learn something of math like me.
well i need help with this integral.

integral (x³-5x+3)ln(x) dx

thanks

We need to see your work, to know where you are stuck, and what methods you have tried.

This looks to me like "integration by parts" would work.
I would let u(x) = ln(x),
and let dv = (x³ - 5x + 3) dx
Can you see why I split the integrand that way?

If you need more help, show us how far you got.

 

[vegeta]

thanks, i solved the integral. I did it by substitution. Thanks !!!!!