JEE Main 2018 Maths Question-Let f (x) be a polynomial of degree 4 having extreme values at

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Detailed Explanation:

Let f (x) be a polynomial of degree 4 having extreme values at x=1 and x=2.

If \lim_{x\rightarrow 0}\left ( \frac{f\left ( x \right )}{x^{2}}+1 \right )=3, then f (−1) is equal to :

Option 1) \frac{9}{2}
Option 2) \frac{5}{2}
Option 3) \frac{3}{2}
Option 4) \frac{1}{2}

[rachalaboy]

why are you copying the solution as it is given without explaining the steps ? ..like how did 'd' and 'e' became equal to zero ?