anonymous
  • anonymous
@surjithayer @Luigi0210
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
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Luigi0210
  • Luigi0210
Isn't that the same question?
anonymous
  • anonymous
oooo sorry hold on

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anonymous
  • anonymous
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anonymous
  • anonymous
i think its (x+4)1 idk if im correct
Luigi0210
  • Luigi0210
Did you switch y and x?
anonymous
  • anonymous
its suppose to be y
Luigi0210
  • Luigi0210
This is how you start: \[x=\frac{y}{4}-1\] Solve for y
Luigi0210
  • Luigi0210
*+1 Sorry
anonymous
  • anonymous
@divagirl421 , To be fair, I have not worked very much with these types of problems. I believe your correct in accordance with my Algebraic background. But, be sure to check your work to insure your correct. God Bless, and have a wonderful night! \(\color{red}{Chance}\) ___________________________________________ @Luigi0210 I learned to do Latex.
anonymous
  • anonymous
1/4y+1?
anonymous
  • anonymous
@Luigi0210
Luigi0210
  • Luigi0210
Switch y and x from the original \[x=\frac{y}{4}+1\] Subtract 1 \[x-1=\frac{y}{4}\] Multiply by 4 \[4x-4=f^{-1}(x)\]
Luigi0210
  • Luigi0210
Is it asking for the inverse of x or y? Psymon.
Psymon
  • Psymon
y. Interesting, looks like a trick question.
Luigi0210
  • Luigi0210
Exactly
Psymon
  • Psymon
You need to rearrange the function to make it a function of y first. y = (x/4) + 1 So to make f(y), we solve for x first. x = 4(y-1) = f(y) Now find the inverse of that.
anonymous
  • anonymous
so i just switch then solve
anonymous
  • anonymous
i believe its x
Psymon
  • Psymon
Nah, it says to find the inverse of f when it is a function of y. Which means you have to solve for x first before you switch any variables. You dont do the inverse process until you solve for x in the original.
anonymous
  • anonymous
its 4y-4
Psymon
  • Psymon
x= 4y-4. This is your f(y). Now find the inverse of that.
anonymous
  • anonymous
thats the answer
Psymon
  • Psymon
Is that what it says?
Luigi0210
  • Luigi0210
Was I right the first time? o_O
anonymous
  • anonymous
@Luigi0210 yes you just needed the y i guess you have to change it back
Psymon
  • Psymon
I swear that makes no sense. Luigi did it correctly if it were f^-1(x), but it said f^-1(y) in thhe question. Whatever -_-
Luigi0210
  • Luigi0210
I got stumped on one of those before.. which is why I called my smart buddy over :3
Psymon
  • Psymon
Lol, her question is misleading then if none of that is a typo :/
anonymous
  • anonymous
yea i hate these ones they even confuse my teachers
Psymon
  • Psymon
Id say its written incorrectly.
anonymous
  • anonymous
no its correct its in my textbook to
Psymon
  • Psymon
Textbooks arent always correct, lol. I swear that doesnt make sense x_x Until someone I trust tells me no, lol.
Psymon
  • Psymon
Oh well, thats why you ask luigi and not me, lol.

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