3. Determine the lowest positive root of f(x)=7sin(x)ex1 using (a) the Newton-Raphson method (three iterations, xi=0.3 ). (b) the secant method (five iterations, xi1=0.5 and xi=0.4 ). (c) the modified secant method (three iterations, xi=0.3,=0.01 ). List your results in a table, including iteration number, xr, and a