QUESTION 5: f(x) = 2 -(x-1) + x(x + 1) 2x(x + 1)(x - 1) + 2x(x + 1)(x - 1)(x - 2) function (-1,2), (0,1), (1,2), (2, -7), (3,10) passes through these points and (4,5) Find the interpolation polynomial that passes through the point. QUESTION 6: f(x) = cosx + x3 + xe-* using the values you want for this function write the second Lagrange interpolation polynomial that cuts and using this polynomial f(1,5) value find the relative error made to calculate. 1 QUESTION 7: _lx|dx integral to h = 1 approach with the help of upper and lower sums. Relative in approach find the error