If y - f x - 5 x - 3 4 x - 5 then f y

The correct option is D 5 y + 3 4 y 5 y = f(x) = 5x + 34x 5 4xy 5y = 5x + 3 4xy 5x = 5y + 3 x(4y 5) = 5y + 3 x = 5y + ...

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How to Find the Inverse of a Function

If y = f x ...

Question

If $y = f (x) = \frac{5 x + 3}{4 x - 5}$ then $f (y)$

- x

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x

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\frac{5 y + 3}{4 y - 5}

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2 x

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Solution

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Similar questions

y = f (x) = \frac{x - 5}{5 x - 1}

f (y) = x

y = f (x) = \frac{6 x - 5}{5 x - 6},

f (y) = x, x \neq \frac{6}{5} .

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

f (y) =

f (x)

f (x + y) = f (x) + f (y)

x, y \in R

f (1) = 5

f (x + y) = f (x) \times f (y) \forall x, y \in R

f (5) = 2, f^{'} (0) = 3,

f^{'} (5)

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