How to write equations
| how to write | example | |
|---|---|---|
| equals, plus, minus (− Alt 8722), less, greater |
with spaces | 8 + 7 − 1 = x 14 > x |
| times (× ALT 0215) division |
with spaces | 5 × 7 5 / 7 |
| number | upright | 1592 |
| variable, quantity, parameter, function | italic | k, l, a, b, c |
| function sin, cos, log, lg, ln, exp | upright | sin 51 |
| index (quantity, variables) | italic (numbers in index upright) |
Xl,m / XHDP Kt−1 |
| operator, symbol for derivation integral | upright | df/dx, ∂f/∂x |
| constant | upright | k |
| vector, tensor | italic and bold | a, b, α |
| matrix | CAPITAL BOLD | AT |