Linear algebra is the first kind of algebra that a student is introduced to.

We recognise linear equations because each term is either a constant or the product of a constant and a variable. Note that there are no squares or other powers, an no xy terms or anything like that. These equations can have one or more variables but we are limited to one variable per term.

Although the study of linear equations is extensive and can enter many dimensions, and can involve complex numbers (for example), I am mostly going to restrict myself to work that would be covered in high school (and the first year or so of college/university).

Thank you very much Sir, I really appreciate how you give clear and insightful instruction to a person who does not speak well English. Thanks to you I now have all A’s in Algebra II and Pre-Calculus. It almost as good as my English being an A+ right now. Thanks to you my GPA is now a 4.71 and my SAT is 2200.

Yehochanan M (on a CCM YouTube video about Seven Steps for Your Daily Study Routine)

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