If lim_(x → 0) (e^ax - cos(bx) - (cx e^(-cx))/2)/(1 - cos(2x)) =… | JEE Main 2023 Mathematics PYQ | Jeeify

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MCQMediumJEE Main 2023 · 13 April, Shift 2Limits

If $\lim_{x \to 0} \frac{e^{ax} - \cos(bx) - \dfrac{cx e^{-cx}}{2}}{1 - \cos(2x)} = 17,$ then $5a^2 + b^2$ is equal to:

A
$76$
B
$72$
C
$64$
D
$68$

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