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Algebra calculators
Explore 2 free algebra calculators. Calculate in your browser with clear inputs, worked examples, and transparent methods.
2 calculators available
- Direct Variation: Constant and Values
Find the constant of direct variation or a missing x or y in y=kx, with a sampled straight-line chart.
- Logistic Sigmoid and Its Inverse
Calculate the logistic sigmoid of a real input or recover the input from a probability strictly between zero and one, with a correctly sampled sigmoid chart.