Math Calculators, Lessons and Formulas
It is time to solve your math problem
This page help you to explore polynomials of degrees up to 4.
It can calculate and graph the roots (x-intercepts), signs,
Local Maxima and Minima,
Increasing and Decreasing Intervals, Points of Inflection and
Concave Up/Down intervals.
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Welcome to MathPortal. This web site owner is mathematician Miloš Petrović.
I designed this web site and wrote all the lessons, formulas and calculators.
If you want to contact me, probably have some question write me using the contact form or email me on