Wb JeeLimits Continuity And DifferentiabilityWB JEE 2021MCQ+2 / -0.52021BNEN\(\mathop {\lim }\limits_{x \to \infty } {\left( {{{3x - 1} \over {3x + 1}}} \right)^{4x}}\) হবেA1B0Ce\(-\)8/3De\(-\)4/9Check AnswerClear SelectionReveal AnswerShow Explanation