Math Calculators, Lessons and Formulas
It is time to solve your math problem
This page helps you explore polynomials with degrees up to 4.
The roots (x-intercepts), signs, local maxima and minima, increasing and decreasing intervals, points of inflection, and concave up-and-down intervals can all be calculated and graphed.
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Welcome to MathPortal. This website's owner is mathematician Miloš Petrović.
I designed this website and wrote all the calculators, lessons, and formulas.
If you want to contact me, probably have some questions, write me using the contact form or email me on