The FunctionForge cast
Each friend shows you one idea by how they act. Meet them all and see how the ideas fit together.
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Stride the Pattern-Walker Linear functions (constant rate of change) -
Echo the Sameness-Keeper Constant functions (zero rate of change; output unchanged regardless of input) -
Arc the Curve-Catcher Quadratic functions (parabola — symmetric rate-of-change-changes) -
Burst the Doubler Exponential functions (constant *multiplicative* rate of change) -
Pivot the Rule-Switcher Piecewise functions (different rules for different input ranges) -
Rewind the Step-Reverser Inverse functions (undoing a rule step-by-step to recover the original input) -
Roundel the Round-Returner Periodic functions (a pattern that repeats at a fixed interval) -
Sill the Threshold-Keeper Domain and range (which inputs are allowed and which outputs can appear) -
Vale the Valley-Folder Absolute value (folding the number line at zero so distance is always positive) -
Weir the Chain-Linker Composite functions (feeding one rule's output into the next)