Solve for X function

This function solves any algebraic equation where you need to solve for a single variable (x)

pastebin get bs4QNDyS solve

Syntax:

solve("2*x-4","4*x+3","x")
--First argument is the left part of the equation
--Second argument is the right part.
--Third is the name of the variable to do math with.
--This function supports adding functions like math.sqrt or math.sin

strsolve("2x(3-x) = 8x - math.sqrt(8)")
--First argument is a full equation
--Second argument can be a variable name, but defaults to "x"
--This too can have functions like math.sqrt

Give me some credit, or PM me, if you want to use this for your programs. Or don't. I won't find out…_{or eat you}
This function might not be 100% accurate if you get irrational answers (off by a billionth or something), or is unsolvable. It does its best to detect that, though.

Hmm….

I broke it :)/>

Spoiler

Edit; very nice work tho, for not crafted functions specially designed to thwart your algorithm it works pretty well :)/>
Basically it doesn't like inflection points very much, at all

apemanzilla, on 11 May 2017 - 02:32 PM said:

Hmm….

@EldidiStroyrr also this happens bc the loadstring turns into -2^2=-4 which lua sees as -(2^2)=-4

Shite. I wonder how I could fix it. How does my CASIO calculator do it…?