Currently studying exam papers but I dont understand how to do these: Q1: Let f(x) = x^2 and g(x) = 4x Let c algebraic expression involing c for the area of the region between the graphs of f(x) and g(x) in the interval [1,c] Q2:

Consider the solid of revolution given by revolving the area bounded by y = 17 . x2 + 1 and y = \\sin(x) from x = 0 to " about the x-axis. Give an expression in terms of x for the volume of the solid of revolution: V - 1 B dx where A = [3 marks] where B = [8 marks]