Let f be a real valued function
- let f be a real valued function on (0 1)
- let f be a real valued function such that for any real and for some then
- let f be a real valued function satisfying f(x/y)
- let f be a real valued function defined on r
- let f be a real valued function such that f(x)+2f(2002/x)u003d3x
- let f be a real valued function defined on the interval (-1 1) such that
- let f be a real valued function defined on r-(-1 1)
