anonymous
  • anonymous
Find the inverse
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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zzr0ck3r
  • zzr0ck3r
ok?
anonymous
  • anonymous
\[f(x)=\frac{ 1+5x }{ 7-3x }\]
DebbieG
  • DebbieG
Change the f(x) to y, then swap your x's and your y (e.g., write a y in place of each x, and and x in place of the y) Then solve for y.

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anonymous
  • anonymous
okay. stay so I can check with you
anonymous
  • anonymous
okay so I have \[-3^{2}+2y-1=0\]
anonymous
  • anonymous
am I on the right track?
zzr0ck3r
  • zzr0ck3r
\[y=\frac{1+5x}{7-3x}\] as @DebbieG said switch the x's and y's \[x=\frac{1+5y}{7-3y}\] solve for y\[x(7-3y)=1+5y\\7x-3xy=1+5y\\7x-1=3xy+5y\\y(3x+5)=7x-1\\y=\frac{7x-1}{3x+5}\]
DebbieG
  • DebbieG
sorry, I was in another tab. Well, no, I'm not sure where you came up with that. @zzr0ck3r shows you how to do it above.
anonymous
  • anonymous
thanks guys
zzr0ck3r
  • zzr0ck3r
np

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