JEE Math Practice Question
If $$\mathop {\lim }\limits_{x \to \infty } {\left( {1 + {a \over x} - {4 \over {{x^2}}}} \right)^{2x}} = {e^3},$$ then 'a' is equal to :
- A.2
- B.$${3 \over 2}$$
- C.$${2 \over 3}$$
- D.$${1 \over 2}$$
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