morpheu5/mathparser

A parser for text-entry maths that will eventually go into https://isaacphysics.org/equality

MathParser

A parser of math formulas to allow text entry on Isaac Physics' symbolic editor

This is no more than a demo application. This code will eventually make its way into Isaac Physics.

npm install
npm run serve

Some of the expressions that this can parse right now are

• x + y
• x/y
• x/yz -> (x/y)*z
• x/-yz -> (x/(-y))*z
• t_0
• alpha_t0
• sin(x)
• sin(x)^2
• log(x, 10)
• ln(x)
• log(x, e)
• e^(i*omega + phi)
• e^ish -> (e^i)*s*h
• e^-ish -> (e^(-i))*s*h
• Delta x -> ∆*x
• Deltax -> ∆x, not ∆*x
• delta x -> δ*x
• deltax -> δx, not δ*x
• d t -> d*t
• dt -> dt (differential)
• dabc -> d*a*b*c
• diff(x^2, x)
• diff(x^3 * y^2, x, x, y)
• diff(x^3 * y^2, x, 2, y) (equivalent to the one above)

Differentials only differentiate one letter -- no brackets supported (yet?)

Other features:

• Greek letters to be converted to their Unicode counterparts
• radicals
• (in)equalities
• derivatives
• absolute values
• differentials, maybe?

For now, enjoy 🙂