Math Calculators, Lessons and Formulas
It is time to solve your math problem
Find the limit:
Direct substitution gives the indeterminate form 0/0. You can still
solve this problem, however: write tan x as (sin x)/(cos x).
Creative mathematicians now, as in the past, are inspired by the art of mathematics rather than by any prospect of ultimate usefulness.
Eric Temple Bell
Mathematics is a game played according to certain rules with meaningless marks on paper.
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