Quadratic equation & Minus B
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How do I solve the quadratic equation ax^2+bx+c=0 using the minus b formula, x=-b+- sqrt b^2-4ac/2a on MATLAB
Thank you
3 Comments
James Tursa
on 15 May 2019
To read coefficients from the keyboard, you could use the input function
To see if a number is real, you could use the isreal function
Accepted Answer
kirti singh
on 16 May 2019
The following example code snippet works for accepting the coefficients a,b and c and calculating the roots and finding if they are real or not:
a1 = 'Enter value of a ';
a = input(a1)
b1= 'Enter value of b ';
b = input(b1)
c1= 'Enter value of c ';
c = input(c1)
x1 = (-b + sqrt(b^2 - (4 * a * c))) / (2 * a);
x2 = (-b - sqrt(b^2 - (4 * a * c))) / (2 * a);
t1=isreal(x1);
t2=isreal(x2);
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More Answers (1)
Pavi thra
on 28 Oct 2020
a1 = 'Enter value of a ';
a = input(a1)
b1= 'Enter value of b ';
b = input(b1)
c1= 'Enter value of c ';
c = input(c1)
x1 = (-b + sqrt(b^2 - (4 * a * c))) / (2 * a);
x2 = (-b - sqrt(b^2 - (4 * a * c))) / (2 * a);
t1=isreal(x1);
t2=isreal(x2);
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