Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Mathematics Limit and Continuity Evaluation of Limits
If \(\rm \displaystyle\lim_{x \rightarrow 1} \dfrac{x^4-1}{x-1} = \lim_{x\rightarrow k} \dfrac{x^3-k^3}{x^2-k^2}\), where k ≠ 0, then what is the value of k?
1
\(\dfrac{2}{3}\)
2
\(\dfrac{4}{3}\)
3
\(\dfrac{8}{3}\)
4
More than one of the above
5
None of the above