Question 4: Given the function y=f(x) has derivative and is continuous on the set of real numbers R, the graph of the function y=f′(x) is shown in the figure. In what range is the function y=f(2x–5) covariate?

From the graph of the function we have:

\(\begin{array}{l} f'(x) > 0 \Leftrightarrow \left[\begin{array}{l}1

Consider the function \(y=f(2x-5)\Rightarrow y’=2f'(2x-5)\)

Let the function \(y=f(2x+5)\) covariate then

\(\Leftrightarrow \left[\begin{array}{l}1<2x-5<2\\2x-5>3\end{array}\right\Leftrightarrow\left[\begin{array}{l})3

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