Today we learned about functions and their inverses. I learned that graphically, inverses are just a function reflected over the y=x line, but that doesn't always make a function. Here are some examples of functions and their inverses (from the notes).
f(x) --> f^-1(x)
x^2 --> sqrt(x)
3x --> x/3
4x+1 --> (x-1)/4
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