2 years ago

X2+Y2=25

Mathematics

1 answer:

Fofino [41]2 years ago

8 0

$x^{2} + y^{2} =25$ is equation of circle which have radius equal 5 and center in (0,0) point

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If f(x) = <img src="https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B9%7D" id="TexFormula1" title="\frac{1}{9}" alt="\frac{1}{9}" align=

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Solution given:

f(x) = $\frac{1}{9}$ x-2

let f(x)=y

y = $\frac{1}{9}$ x-2

interchanging role of x and y

x= $\frac{1}{9}$ y-2

x+2= $\frac{1}{9}$ y

y=9(x+2)

y=9x+18

F-¹(x)=9x+18

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F-¹(-1)=9*-1+18=-9+18=9

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