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The function defined by f(x) = (x + 7)/(2x + 5) Find f(4x) .

The function defined by f(x) = (x + 7)/(2x + 5) Find f(4x) .-example-1

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Solution:

The question is given below as


\begin{gathered} f(x)=(x+7)/(2x+5) \\ find, \\ f(4x) \end{gathered}

Concept:

Substitute x with 4x in the function above


\begin{gathered} f(x)=(x+7)/(2x+5) \\ f(4x)=(4x+7)/(2(4x)+5) \\ f(4x)=(4x+7)/(8x+5) \end{gathered}

Hence,

The final answer is


\Rightarrow f(4x)=(4x+7)/(8x+5)

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