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You don't need all that code... The first derivative of a x^2 + b x + c is 2a x + b , so solving 2a x + b = 0 for x yields x = -b / (2a) ... ... <看更多>
In this section, we will see that any quadratic equation of the form y=ax2+bx+c y = a x 2 + b x + c has a curved graph called a parabolaThe graph of any ... ... <看更多>
You may be overthinking it. In general when you need to solve for coefficients you first need to ask what relates the coefficients? In this case it doesn't ... ... <看更多>