Maxima and MinimaHard

Question

Given f(x) =
If f(x) has a local minimum at x = 2, then which of the following is most appropriate

Options

A.λ ≤ 5
B.λ ≥ 5
C.λ ≤ 0
D.λ ≥ 0

Solution

There are different possible figures for different values of λ.
     
      
Since f(x) is local minimum at x = 2
⇒ 
for a very small (+)ve h.
clearly λ ≤ 5

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