anonymous
  • anonymous
let f(x) = 2x +5 find the value of (f 0 f ^-1) (-1/2
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
I dont understand the last part what does it say
anonymous
  • anonymous
I think it's f composed of f inverse. \[(f \circ f^{-1})(-1/2) = f(f^{-1}(-1/2)) =\ ?\]
anonymous
  • anonymous
yea.

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anonymous
  • anonymous
which is trivial to answer.
anonymous
  • anonymous
Recall that a function and it's inverse undo each other.
anonymous
  • anonymous
Did you figure it out?
anonymous
  • anonymous
sort of not really. i knoe you plug in 1/2 for the inverse of 2x+5
anonymous
  • anonymous
You really don't need to do anything of the sort. Recall that \(f(f^{-1}(x)) = x\) and therefore \((f\circ f^{-1})(-1/2) = f(f^{-1}(-1/2)) = -1/2\)
anonymous
  • anonymous
The function and it's inverse undo each other. So whatever the inverse does to -1/2, the function will undo and you'll be right back at -1/2

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