int [ |x+1| - |x-1| ] dx, int [1/(sinx+2secx)^2] dx, etc

[aversion]

1) INT (|x+1|-|x-1|)dx=?

2) INT dx/(sinx+2secx)^2=?

3) INT dx/(sin^4 x*cosx)=?

ıf you answer these question, ı will happy so much, pls help me

 

[pka]

Re: could you help me please?

ıf you answer these question,ı will happy so much,pls help me

I can understand that!
It is great to get someone else to do our work for us.