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Math

Join our Math World now to meet up with other math students and mathematicians on the Web. Learn how to perform basic math functions, and share your own tips and tricks for solving problems and calculating answers for everything math related, from algebra to geometry to trigonometry to advanced calculus.
Inequality solution process with number line representation.
May 28, 2010

Not all inequalities are created equal. See how to solve three of the most common types with this free video algebra lesson, which discusses regular, negative and mixed-variable inequalities. From Ram ...

"How to Simplify radicals & square roots using exponent rules" cover image
May 28, 2010

See how to apply exponent rules to simplify radicals or square roots with this free video math lesson from Internet pedagogical superstar Simon Khan. Looking for a primer on how to solve matrix proble ...

Mathematical equations and graphs on a black background.
May 28, 2010

This video demonstrates that the line integral of a scalar field is independent of path direction. Learn how to solve scalar-field integrals with this free video calculus lesson. Looking for a primer ...

Mathematical equations and formulas on a blackboard.
May 28, 2010

This video demonstrates that, unlike line integrals of scalar fields, line integrals over vector fields are path direction dependent. See how to solve vector-field integrals with this free video calcu ...

Mathematical expression involving integration and a series summation.
May 28, 2010

See how to approximate a definite integral to a desired accuracy using Maclaurin/Taylor series and the alternating series estimation theorem with this free video calculus lesson. See how it's done wit ...

Teacher solving a math problem on a whiteboard.
May 28, 2010

Looking for a primer on how to divide mixed numbers in basic arithmetic? See how it's done with this free video math lesson. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world' ...

A person explaining prime factorization on a whiteboard.
May 28, 2010

After a guide on how to reduce fractions using prime factors? See how it's done with this free video math lesson. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and ...

Handwritten math equations on a whiteboard, depicting a system of linear equations and matrices.
May 28, 2010

Looking for a primer on how to solve matrix problems using a TI-83 graphing calculator? See how it's done with this free video algebra lesson. From Ramanujan to calculus co-creator Gottfried Leibniz, ...

Solving a system of linear equations using matrix notation.
May 28, 2010

Looking for a primer on how to solve matrix problems using a TI-89 graphing calculator? See how it's done with this free video algebra lesson. From Ramanujan to calculus co-creator Gottfried Leibniz, ...

Order of Operations: Powers or roots; Multiplication or division.
May 28, 2010

In algebra, "order of operations" essentially means solving first for exponents or roots, then multiplication, division, addition and subtraction. The steps for the order of operations also require at ...