Q4. (5 Marks) a. Check whether these two functions are equal or not: f,g: RR f(x)=x? +1 g(x) = (x - 1)? + 1 b. Prove that the function g: R-R defined by g(x) = 5x + 1 is one-one. c. Prove that the function h: R-R defined by h(x) = 3x -4 is onto. Solution