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Mathematics 6 Online
OpenStudy (anonymous):

Given the function f(x) = 0.5(3)x, what is the value of f-1(7)

OpenStudy (campbell_st):

well 1st find the inverse... the easiest way is to swap x and y x = 0.5(3)^y now make y the subject... once that's done substitute x = 7 and evaluate

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