Gilbert Strang has taught linear algebra at MIT for more than 50 years and the course he developed has become a model for teaching around the world. His video lectures on MIT OpenCourseWare have been ...

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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x = 2\) is a sensible starting value The result is now too big. X must lie between 2.5 and 2.6. Try 2.55, which is halfway between 2.5 and 2.6. Image caption, 2.6 is too big and 2.55 is too small ...

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