Ql Consider the following function: f(x) = 15 5x + 3x2 4x3 a) Verify that the root of the above function lies between -3 and 0. b) Find the root of the same function using false position method until the second iteration (X2). Q2 : Calculate V12 numerically by using Newton-Raphson and Secant methods. Use initial guesses of 3 and 4 for the Secant while initial guess of l for Newton-Raphson method. Calculate until the percentage of relative approximate error becomes less than 1%. Hint: This can be solved by nding the root of f(x) = x2 12. Round off all your calculations to four decimal places when it is required