Maxima and MinimaHard

Question

If f(x) = 1 + 2x2 + 4x4 + 6x6 + ..... + 100x100 is a polynomial in a real variable x, then f(x) has -

Options

A.neither a maximum nor a minimum
B.only one maximum
C.only one minimum
D.none

Solution

f′(x) = x(22 + 42.x2 + 62.x4 +.....+1002.x98}
  

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