Question 329667: The table shows some values for the function f.
x -2 0 2 4
f (x) 7 4 1 -2
What is the value of f -1 (-2) ? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! The table shows some values for the function f.
x -2 0 2 4
f (x) 7 4 1 -2
What is the value of f -1 (-2) ?
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Let f^-1(-2) = x
Then f[f^-1(-2)] = f(x)
And -2 = f(x)
So x = 4
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f^-1(-2) = 4
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Cheers,
Stan H.
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