Saturday, December 7, 2013

High School Math Solutions – Biquadratic Equation Calculator

A biquadratic equation is a quadratic function of a square, having the form f(x)= ax^4+ bx^2 + c.  To solve you simply have to rewrite the equation as a quadratic equation: substitute x^4 with u^2  and x^2 with u,  to get au^2+ bu + c.  See previous post on solving quadratic functions here.

Don’t forget to substitute back and solve for x.  You should get up to 4 solutions; it is a quartic equation after all.

Let’s see how it works (click here):


Here’s another example (click here):


Cheers,
Michal

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