Hai, I have a question solving a cubic equation. I have a function(adsbygoogle = window.adsbygoogle || []).push({});

y=ax*x*x+bx*x. I want to get a solution for the value of a and b. From reference, I found that a=(xtan(Theta)-2y)/(x*x*x) and

b=(3y-xtan(Theta))/(x*x)

[Theta] is an angle or tangent of each point x along a cubic curve or function. Could anyone guide me on how to prove this statement mathematically?

TQ

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# Cubic Equation

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