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docs/app-help/math.md

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 title: Math
 ---
 
-COMING SOON
+Scoppy can display up to two math channels that can be configured using a range of arithmetic functions.
+Up to five functions and three sources can be combined to create simple or complex formulas.
+
+## Enabling the Math Channel(s)
+Tap 'Menu' and then 'Math'. From here you can switch on or off either of the math channels or tapping 'Edit' will
+display the math settings screen.
+
+## Math functions
+
+### Unary functions
+
+Unary functions take a single input (y).
+
+| Function | Description | Implementation |
+-----------|-------------|-|
+| ABS | Absolute value | abs(y) |
+| INV | Inverse | y * -1 |
+| LOG | Base 10 logarithm | log(y) |
+| LN | Base e logarithm | ln(y) |
+| SQUARE | Squares the source | y * y |
+| SQRT | The square root of the source | √y | 
+| RECIP | Reciprocal | 1/y |
+
+### Binary functions
+
+Binary functions take two inputs (y1, y2).
+
+| Function | Description | Implementation |
+-----------|-------------|----------------|
+| ADD | Addition | y1 + y2 |
+| SUBTRACT | Subtraction | y1 - y2 |
+| MULTIPLY | Multiplication | y1 * y2 |
+| DIVIDE | Division | y1 / y2 |
 
 #### See also
-<br>
 {% include scoppy-links.md %}