given a function f(x), how do we evaluate f^-1(4)?

Описание: Given a function f(x), how do we evaluate f^-1(4)? This question isn't hard but it could still be tricky for many students. Subscribe to ‪@bprpmathbasics‬ for more algebra and precalculus tutorials.

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"Just Algebra" (by blackpenredpen) is dedicated to helping middle school, high school, and community college students who need to learn algebra. Topics include how to solve various equations (linear equations, quadratic equations, square root equations, rational equations, exponential equations, logarithmic equations, and more), factoring techniques, word problems, functions, graphs, Pythagorean Theorem, and more. We will also cover standardized test problems such as the SAT. Feel free to leave your questions in the comment!
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