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anonymous
 one year ago
Pre cal show algebraically that f and g are inverse function. f(x)=2x+3;g(x)=x3/2
anonymous
 one year ago
Pre cal show algebraically that f and g are inverse function. f(x)=2x+3;g(x)=x3/2

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0You need to isolate x. Lets say you write f(x) as y. Then you have:\[y=2x+3\] now you isolate x in this function, and then you should get: \[x=y3/2\] Now you swap around x and y, this gives you the inverse function.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0A couple additions: it's so hard to do math with text only! You meant g(x) = (x3)/2 , not g(x) = x3/2 (they're different). Ditto with x = (y3)/2, not x = y  3/2 In precalc, what the teacher/author might be wanting you to do is to verify that f(g(x) = x ( or, g(f(x) = x )
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