Math Is Fun Forum

fangree01

Member

Registered: 2006-11-13

Posts: 11

Integration - Change of Variable (I think)

Hi I was wondering if someone could help me with these integration questions?

Find   

a  ∫ 2x - 1/ √x dx

b  ∫ (x - 1) (x - 3)/ x² dx

c  ∫ cos³x + 2/ cos²x dx

I have a few ideas but I have no notes on this or solutions so I am not sure if I am doing the right thing.  Any help would be greatly appreciated.

Thanks

JaneFairfax

Member

Registered: 2007-02-23

Posts: 6,868

Re: Integration - Change of Variable (I think)

(a)

(b)

(c)

And you can integrate these term by term.

fangree01

Member

Registered: 2006-11-13

Posts: 11

Re: Integration - Change of Variable (I think)

Hi JaneFairfax,

Thanks so much for your help its always the simple things that get me.

Thank you