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Example code of gamajo/quadratic

Informations about the package quadratic

Gamajo Quadratic Equation Solver

PHP classes for working with, and solving, quadratic equations.

What Is A Quadratic Equation?

A quadratic equation is a univariate polynomial with degree of 2, that is then set to equal zero so that the indeterminate can be determined:

ax2 + bx + c = 0

Equations can often be solved with factoring or completing the square, but there is also a Quadratic Formula:

X equals negative B, plus or minus the square root of B squared minus four A C, all over two A

The QuadraticEquation interface constructor accepts values for a, b and c and the Solver can return one or both roots, including imaginary roots.

Installation

Requires PHP 7.

Usage

Basic Usage

Create an equation object, pass that to the solver, solve, and retrieve the roots:

The Solver has no problem with complex roots:

BasicQuadraticEquation Methods

The BasicQuadraticEquation class implements the QuadraticEquation interface, which in turn extends the Equation interface. As such, it supports the following methods:

There is also a hasValidArguments() method, but as this library uses scalar type declarations, the manual check to see if they are all integers is somewhat redundant.

Solver Methods

The Solver class can optionally set the maximum decimal place precision of the roots:

Change Log

See the change log.

License

MIT.

Contributions

Contributions are welcome - fork, fix and send pull requests against the develop branch please.

Credits

Built by Gary Jones.
Original procedural code version, copyright 2004 Gary Jones.
This version copyright 2016 Gamajo Tech

All versions of quadratic with dependencies

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Requires php Version >=7
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