Brainstorm renders real mathematics from LaTeX, using a native CoreText engine (no web view). The default math font is AMS Euler, the typeface designed to look like handwritten mathematics, so equations match the notebook feel.
Writing an equation
- Pick the Math tool (the
∑/function icon in the palette). - Click where you want the equation.
- Type LaTeX. A live preview of the rendered equation appears above the input as you type,
with a hint (
\frac{a}{b}orx^2) when it's empty. - Click away (or press Escape) to place it.
Examples
| LaTeX | Renders |
|---|---|
x^2 + y^2 = r^2 | a quadratic relation |
\frac{a}{b} | a fraction |
\int_0^1 x^2\,dx = \tfrac{1}{3} | a definite integral |
\sqrt{2} | a square root |
\sum_{i=1}^{n} i | a summation |
You can use the full range of common LaTeX math: fractions, roots, integrals, sums, Greek letters, super/subscripts, matrices, and more.
Type it in plain words
Don't want to remember LaTeX? While editing an equation, use the Insert menu for ready-made
formulas and symbols, or the Words button to type in plain language and drop in the result. For
example, "x squared plus 1 over 2" becomes x^{2}+\frac{1}{2}, and "sum from i to n of x" becomes
\sum_{i}^{n}x. A live preview shows the LaTeX before you insert it.
Editing and color
- Edit: double-click the equation (or select it and press Return) to change the LaTeX.
- Color: equations use the page's ink color, so they read correctly on any theme (white chalk on a chalkboard, dark ink on paper).
- Print/PDF: equations export crisply.
Next: Drawing & diagrams.