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f r 1 r 9 find f x 2 1

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f(r) = 1/r+9 find f(x^2) + 1

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Answer to a math question f(r) = 1/r+9 find f(x^2) + 1

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$=f(x^{2})+1$

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

$=\frac{1}{x^{2}}+10$

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f(x)= 9-x^2 find (f(x+h)-f(x) )/h