math tools

3 tools in this category.

• Line Integral Calculator: Scalar and Vector, FreeEvaluate scalar ∫ f ds and vector ∫ F · dr line integrals over your parametrized curve in 2D or 3D. Numeric, no signup, cites Paul's Notes and OpenStax.
• Multivariable Limit Calculator (Path Checker), FreeMultivariable limit calculator: a numeric two-path test for f(x, y). Checks six paths, names ones that disagree, estimates the value. Free, no signup.
• Reverse Percentages Calculator: Find the OriginalReverse percentages calculator: work backwards from a value after an increase, a discount, or a percent of a whole to find the original, with a check.