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03-12-2016
Mathematics

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Let f(x)=13x+7. Find f−1(x).

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03-12-2016

replace f(x) with y
switch x andn y
solve for y
replace y with f⁻¹(x)

f(x)=13x+7
y=13x+7
x=13y+7
x-7=13y
[tex]y= \frac{x-7}{13} [/tex]
[tex]f^{-1}(x)= \frac{x-7}{13} [/tex]

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