question_answer

Let f: \[R\to R\]be a differentiable function and \[f(1)=4.\]. Then the value of \[\underset{x\to 1}{\mathop{\lim }}\,\,\frac{\int\limits_{4}^{f(x)}{2t\,dt}}{x-1}.\]if \[(1)=2\]is -

Answer:

(16)