Tutorial

AI

The AI button opens a tutor that sees your sheet. Attach the problem (PDF, photo, Word or text) and ask it to help you solve it, check where your work went wrong, or write equations onto your sheet. Pick the model in its settings: the site's default, your own Claude key, or any OpenAI-compatible endpoint (including local models). In a Steps panel, Ask AI brings those steps along.

Steps

Hover a line and press Steps to see how it's worked out: the algebra, calculus or matrix work, one step at a time.

Tab

Fills in the light gray prediction after the cursor: a function (co → cos), a Greek letter (th → theta), a subscript you've used (x → x₁ when x₁ is set), or the rest of a line you're typing again. You can also click the prediction.

_

Starts a subscript right away: I_G shows as I_G. An operator, space or → takes you back out. Letters are single, so ab means a·b.

^

Starts an exponent. Press → or space to leave it.

/

Builds a stacked fraction. Whatever is just before the cursor becomes the top; ↑ ↓ switch between top and bottom.

sqrt

Turns into a √ box as soon as you type it. Also nthroot(x,3), cbrt(x), |x|.

Units

The Units button converts between SI (with every prefix, from quecto to quetta), FPS / US customary and common metric units, including compound units like kN·m → ft·lbf.

Symbols panel

The panel on the right inserts symbols; hover one to see what to type instead.

pi, phi, theta…

Greek names turn into the letter as you type them. If you meant plain letters, press Tab right away to switch back.

Shift + ← →

Highlights what you pass over; type, delete or copy to act on it. Shift+Home/End selects to the edge, Ctrl/⌘+A selects the line.

sec, csc, cot

Plus sin, cos, tan, the arc- versions (arcsec…), sin^-1, and hyperbolic forms.

ln, log, log_2(8)

Natural log, base 10, any base.

x^2 − 5x + 6 = 0

An equation with one undefined letter is solved for it. Polynomials get every root, including complex ones.

x+y=3, x−y=1

A system on one line, separated by commas.

Enter between equations

Equations on back-to-back lines combine into a system once there are enough of them. A blank line starts a new one.

Tabs

+ opens a new Scientific or Graphing tab. Click the tab you're on to flip it between equations and a graph. Double-click a name to rename it.

int, d/dx, lim, sum, prod

Type these to get ∫ with bounds, a derivative, a limit (end the target with + or − for one side), Σ or Π. f′(x) and f″(x) differentiate your own functions.

[

Starts a matrix. Arrow into the dotted boxes (or type , and ;) to add columns and rows. det, inv, transpose, rref and A·X = B all work.

Vectors

î, ĵ and k̂ are the unit vectors: F = 3î + 4ĵ. In Mechanics and Aerospace, typing i, j or k gives the hat (press Tab right away for a plain letter); anywhere, type ihat, jhat, khat or use vec(3, 4, 0). |F| or mag(F), unit(F), angle(F), dot(A, B) or A·B, cross(A, B) or A×B. An equation like F_1 + F_2 + W = 0 is solved part by part (x, y, z), even for an unknown vector, and F = T(cos(30°)i + sin(30°)j) can use a magnitude T you haven't found yet.

i, infinity

i is the imaginary unit (unless you set i yourself). infinity becomes ∞.

Graphing

y = x^2, x = 3, x^2 + y^2 = 16, or f(x) = … all plot. Set other letters on any line (a = 2). Drag to move, scroll or pinch to zoom.

f(x) = x^2 + 1

Define a function, then use f(3) below.

ans, π, e, 30°

Last result, constants, and degrees inside any expression.

Subject menu

Pick Mechanics, Aerospace, E&M, Chemistry… and its constants (g, ε₀, N_A, ħ…) fill in wherever you use those names. Setting the name yourself on a line overrides it, and you can switch any constant off in the side panel.

Variables carry down the page: a line can use anything set above it. Enter adds a line, ↑ ↓ move between lines, Backspace on an empty line removes it, Ctrl/⌘+Z undoes, and Ctrl/⌘+A selects the line. A solved value is saved as a variable for the lines below. When there are several, remove the ones you don't want with × and the last one left is kept.