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I am writing a program in C that calculates this formula:
(source: crewtonramoneshouseofmath.com)
here is the line of code (I am just using + instead of the +-):
x = ((-1 * b) + (sqrt(pow(b, 2) - 4 * a * c)))/(4 * a);
I am not getting the correct root. For example if a = 1, b=-2, and c=-2 it SHOULD be 2.73. Instead I am getting 1.37.
Been staring at the code and I don’t see the mistake. Can someone point it out for me?
x = (...) / (4 * a)Shouldn’t this be
2 * a?