Linear algebra has become the subject to know for people in quantitative disciplines of all kinds. No longer the exclusive domain of mathematicians and engineers, it is now used everywhere there is ...

This sixth edition of Professor Strang's most popular book, Introduction to Linear Algebra, introduces the ideas of independent columns and the rank and column space of a matrix early on for a more ...

Algebraic expressions can be expanded - multiplied by one or more terms. They may also be simplified – made shorter and simpler by collecting like terms. Multiply \(-3\) by \(-4\) using the rule ...

Find out how to substitute simple expressions and formulae. Find pairs of values that satisfy equations with two variables Learn how to find pairs of values that satisfy equations with two variables.

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The book will keep “his legacy alive,” Navalnaya said. By Alexandra Alter The Russian opposition leader, who died in an Arctic penal colony earlier this year, tells the story of his struggle ...

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