Help with simple integral

[Benjamin753]

Was wondering if anyone could tell me how I'd go about integrating:

 

Int[(r(z))^2 dz] on the interval [1,h] where r(z) is an arbitrary function of z.

 

help is appreciated:)

[vaishakh]

Do you know the integration of f(x).g(x).dx. Use the same formula

[ydoaPs]

Was wondering if anyone could tell me how I'd go about integrating:

 

Int[(r(z))^2 dz] on the interval [1' date=h] where r(z) is an arbitrary function of z.

 

help is appreciated:)

 

[math]\int^h_1{(r(z))^2}dz[/math]?

 

i'm not sure without knowing what z is.