equation-solver

A program that will solve any linear, quadratic and cubic equation.

How to use it

• Download the 'equationsolver' package:

go get -u github.com/Gabri432/equation-solver

• Example of usage

package main

import (
    "fmt"
    eq "github.com/Gabri432/equation-solver"
)

func main() {
    solution := eq.EvaluateEquation("x^3-4x=5x^2-1")
    fmt.Println("real solutions: ", solution.RealSolutions, "\ncomplex solutions:", solution.ComplexSolutions)
    myPolynom := eq.Polynom{A: 1, B: 5, C: -4, D: 1}
    fmt.Println(myPolynom.SolveEquation())
}

=== Output ===

real solutions: [-0.8752... 0.2013... 5.6739...]

complex solutions: []

{[0.38196... 2.61803...] [] }

Functions

EvaluateEquations(equation string) EquationSolution

• Takes the equation in form of string and returns the result of type EquationSolution

ValidateEquation(equation string) string

• Checks if the user inserted equation is valid.

Types

Polynom

// Creates a polynom in the form: ax^3+bx^2+cx+d
type Polynom struct {
	A float64
	B float64
	C float64
	D float64
}

EquationSolution

type EquationSolution struct {
	RealSolutions    []float64    // set of real solutions
	ComplexSolutions []complex128 // set of complex solutions
	ErrorDescription string       // error message

Project Structure

• (main)
  • equation.go
  • equation_test.go
  • internal_functions.go
  • internal_functions_test.go
  • license
  • README.md
  • README.it.md
  • .github
    • CONTRIBUTING.it.md
    • CONTRIBUTING.md

Contribuire al progetto

• If you want to add a feature or making a fix check out this page explaining how to do it: Contributing to equation-solver

Notes

• If you want to check the accuracy of the program use the following links:
  • Cubic Equations Solver
  • Quadratic Equations Solver