HW3_3 Using built-in functions a) Use MATLAB built-in function roots to find all the roots of the polynomial g(x) = x4 +65x3 + 86x + 128. Print the roots using fprintf exactly as shown below. **You will find MATLAB functions real & imag to be helpful for printing complex numbers. The roots of x^4 + 65x^3 + 86x + 128 are - 65.0199, 0.4679 + 1.38941, 0.4679 - 1.38941, -0.9159 b) Given f(x) = x3 5x + 10 and g(x) = 4 sin(3x) + 6