anonymous
  • anonymous
x f(x) -1 1 2 3 3 6 5 7 7 8 The values in the table define the function f(x). The value of f^-1(3) is_____________ , and the value of f^-1(8) is____________.
Mathematics
  • Stacey Warren - Expert brainly.com
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jamiebookeater
  • jamiebookeater
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welshfella
  • welshfella
do you know what f^-1(x) means
anonymous
  • anonymous
no
anonymous
  • anonymous
something about inverse functions

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More answers

Astrophysics
  • Astrophysics
For the values given the inverse values are just switched from the original function
welshfella
  • welshfella
Ok - it means the Inverse of f(x) yes
anonymous
  • anonymous
so its f(x)?
Astrophysics
  • Astrophysics
so if you have x = -1 f(x) = 1, you'll have x = 1 f^(-1)(x) = -1
Astrophysics
  • Astrophysics
notice how it's just switched around
welshfella
  • welshfella
|dw:1437652593147:dw|
Astrophysics
  • Astrophysics
|dw:1437652641126:dw|
anonymous
  • anonymous
so replace x for y?
Astrophysics
  • Astrophysics
Yeah you're basically replacing x and y (x,y) ->(y,x)
welshfella
  • welshfella
In my diagram f(x) maps the value 1 to 3 f^-1 (x) maps 3 to 1
anonymous
  • anonymous
i still dont know the answer
Astrophysics
  • Astrophysics
|dw:1437652879340:dw|
Astrophysics
  • Astrophysics
I think it should be pretty clear now
anonymous
  • anonymous
so the value of f^-1(3) is 1?
Astrophysics
  • Astrophysics
No...
Astrophysics
  • Astrophysics
\[f^{-1}(1) = -1~~~f^{-1}(3) = ?\]
anonymous
  • anonymous
-3?
Astrophysics
  • Astrophysics
The input is the x, the output if the f^(-1)(x)
Astrophysics
  • Astrophysics
No just look at the table :\
anonymous
  • anonymous
2?
Astrophysics
  • Astrophysics
Yeah
Astrophysics
  • Astrophysics
That's all to it, like I was explaining earlier, you're just flipping the (x,y) basically.
Astrophysics
  • Astrophysics
So what is f^(-1)(8) fill out the table and see
anonymous
  • anonymous
and f^-1(8) is 7?
Astrophysics
  • Astrophysics
Yes, exactly! :)
anonymous
  • anonymous
thanks
Astrophysics
  • Astrophysics
Np

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