Which of the following limits can be evaluated merely by substituting ?

MATHEMATICS · Single correct · AP · Calculus AB · Limits and Continuity · Limits and Continuity

Problem

Which of the following limits can be evaluated merely by substituting

x=1

? (a)

\displaystyle \lim_{x\to 1}\dfrac{\sin(x-1)}{x-1}

(b)

\displaystyle \lim_{x\to 1} \sqrt{2x+3}

(c)

\displaystyle \lim_{x\to 1}\dfrac{x^{3}-1}{x-1}

(d)

\displaystyle \lim_{x\to 1}\sqrt{x-1}