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How could you restrict the function y=5(2)^x -4 so that it's inverse is a function? PLEASE HELP?
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- Jeff AaronLv 74 years ago
As long as x and y are real, the inverse is a function:
x = 5(2^y) - 4
x + 4 = 5(2^y)
(x + 4) / 5 = 2^y
y = log [base 2] of ((x + 4) / 5)
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