For Problems 1-3, you are given f(x)--1-0.5x + 0.4x2-0.3x3 + 0.2x4 + 0.1x5 1. Plot this function using Excel with -4Sxs4 and-63y s6. Use the secant method to find all 3 of the real roots. For each root, you will need to choose a different initial pair of starting values. iterates in each case. 2. Show the progression of your You can check your answers against the results of using the following MatLab command: s-solve('-1-0.5#x + 0.4*x^2-0.3#x^3 + 0.2"X4 +0.1#x^5-0') 3. Use polynomial deflation to reduce the starting polynomial to a quadratic. Solve this quadratic for the two remaining (complex) roots. For Problems 1-3, you are given f(x)--1-0.5x + 0.4x2-0.3x3 + 0.2x4 + 0.1x5 1. Plot this function using Excel with -4Sxs4 and-63y s6. Use the secant method to find all 3 of the real roots. For each root, you will need to choose a different initial pair of starting values. iterates in each case. 2. Show the progression of your You can check your answers against the results of using the following MatLab command: s-solve('-1-0.5#x + 0.4*x^2-0.3#x^3 + 0.2"X4 +0.1#x^5-0') 3. Use polynomial deflation to reduce the starting polynomial to a quadratic. Solve this quadratic for the two remaining (complex) roots