JEE Advanced Model Paper 1 with solutions for online practice

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Question : 58 of 60

Marks: +1, -0

Let f be a biquadratic function of x given by
f(x) = Ax4 + Bx3 + Cx2 + Dx + E , where
A , B , C , D , E ∊ R and A ≠ 0 . If

Lt

x→0

(

f(−x)

2x3

)

1

x

= e−3 , then

A + 4B = 0
A - 3B = 0
f(1) = -8
f'(1) = -30

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