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anonymous
 one year ago
if f(x)=5x11 then f^1(x)= ?
inverse functions confuse me please help
anonymous
 one year ago
if f(x)=5x11 then f^1(x)= ? inverse functions confuse me please help

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0can you solve \[5x11=7\]?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0for example i mean it takes two steps only

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[x=\frac{ 18 }{ ?5}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0well \[\frac{18}{5}\]yes how did you do it?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I did the work and checked it with a calculator

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0"the work" being what ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0but is that all there is to it?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0two steps right? what were those two steps?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0switch x and y, solve for y and x, and substitute f^1 for y

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0my school teaches it in three steps

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0but that isn't the answer they want

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok all i was trying to point out is that if you can solve \[5x11=7\] that means if you know the output 7, you know the input \(\frac{18}{5}\) the two steps where a) add 11 b) divide by \(5\) that is what the inverse does

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0if you cannot do it in your head (which you can) solve \[5y11=x\] for \(y\) same two steps a) add 11\[5y=x+11\]divide by \(5\) \[y=\frac{x+11}{5}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0or if you want to pull out the minus sign, write \[f^{1}(x)=\frac{x+11}{5}\]
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