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Numerical integration
To calculate definite integral by the rectangle method, trapezoid method, Simpson method or other Newton-Cotes quadrature methods.
Lagrange polynomial calculator
This online calculator builds Lagrange polynomial for a given set of points, shows a step-by-step solution and plots Lagrange polynomial as well as its basis polynomials on a chart. Also, it can interpolate additional points, if given
Curve fitting using unconstrained and constrained linear least squares methods
This online calculator builds a regression model to fit a curve using the linear least squares method. If additional constraints on the approximating function are entered, the calculator uses Lagrange multipliers to find the solutions.
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