Problem

Find the global maximum and minimum for the function on the closed interval. \[ f(x)=x-2 \ln (x+1) \quad 0 \leq x \leq 2 \]

Solution

Step 1 :Find the global maximum and minimum for the function on the closed interval \(f(x)=x-2 \ln (x+1) \quad 0 \leq x \leq 2\)

Step 2 :Take the derivative of the function: \(f'(x) = 1 - \frac{2}{x + 1}\)

Step 3 :Find the critical points by setting the derivative to zero: \(1 - \frac{2}{x + 1} = 0\) which gives \(x = 1\)

Step 4 :Evaluate the function at the critical points and the endpoints of the interval: \(f(0) = 0\), \(f(1) = 1 - 2 \ln(2)\), and \(f(2) = 2 - 2 \ln(3)\)

Step 5 :Compare the values to determine the global maximum and minimum: \(\boxed{\text{Global Maximum: }(0, 0)}\) and \(\boxed{\text{Global Minimum: }(1, 1 - 2 \ln(2))}\)

From Solvely APP
Source: https://solvelyapp.com/problems/16354/

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