solv.2dg.polynom: Real solutions of quadratic equation

In SimEvolEnzCons: Simulation of Evolution of Enzyme Under Constraints

Description

Computes real solutions of quadratic equation

Usage

solv.2dg.polynom(a_fun,b_fun,c_fun)

Arguments

a_fun	Numeric. The quadratic coefficient applied to x^2
b_fun	Numeric. The linear coefficient applied to x
c_fun	Numeric. The free term

Details

Quadratic equation is a second-degree polynomial equation of type a x^2 + b x + c = 0, where a is the quadratic coefficient, b the linear coefficient and c the free term.

Value

Three possible vectors:

• Numeric vector of length 2 if there is two real roots

• Numeric value if there is a double-root

• NULL if there is no real solution

Examples

solv.2dg.polynom(3,2,1)
#result : NULL

solv.2dg.polynom(1,2,1)
#result : -1

solv.2dg.polynom(1,0,-1)
#result : c(1,-1)

SimEvolEnzCons documentation built on Oct. 29, 2021, 1:07 a.m.