Write a function for solving a quadratic equation using the following header: de

Question

Write a function for solving a quadratic equation using the following header: def solveQuadratic (eqn, roots): The coefficients of a quadratic equation ax^2 + bx + c = 0 are passed to the list eqn and the noncomplex roots are stored in roots. The function returns the number of roots. See Programming Exercise 4.1 on how to solve a quadrate equation. Write a program that prompts the user to enter values for a, b, and c and displays the number of roots and all noncomplex roots.

Explanation / Answer

def solveQuadratic(equ, roots): r = [] if roots > 0: r.append((-(equ[1])-((equ[1])**2 - 4*equ[0]*equ[2])**.5) /(2*equ[0])) r.append((-(equ[1])+((equ[1])**2 - 4*equ[0]*equ[2])**.5) /(2*equ[0])) return r elif roots == 0: r.append((-(equ[1])-((equ[1])**2 - 4*equ[0]*equ[2])**.5) /(2*equ[0])) return r equ = input("Enter a, b, and c separated by a space: ") equ = equ.split() for i in range(0,3): equ[i] = int(equ[i]) if ((equ[1])**2 - 4*equ[0]*equ[2])**.5 > 0: roots = 2 answers = solveQuadratic(equ, roots) print("The number of roots are "+ str(roots)) print("Their values are ", end = "") print(str(answers[0])+" and "+str(answers[1])) elif ((equ[1])**2 - 4*equ[0]*equ[2])**.5 == 0: roots = 1 answers = solveQuadratic(equ, roots) print("The number of roots is "+ str(roots)) print("The value is "+str(answers[0])) else: roots = 0 print("There are no roots") print("There are no values")

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