Given f(x)=x1−e2x−1k−1,x=0
and f(x) is continuous at x=0.
⇒f(0)=x→0lim(x1−e2x−1k−1)
=x→0lim2x2(2xe2x−1)(1+(2x)+2!1(2x)2+…(−1−x(k−1)))
=x→0lim2x2(1+(2x)+2!1(2x)2+…(−1−x(k−1)))
Clearly, k=3 and f(0)=1. ( ∵Equating coefficient of x=0)
JEE Main 2018 — Mathematics Calculus
If the function f defined as f(x)=x1−e2x−1k−1,x=0 is continuous at x=0, then ordered pair (k,f(0)) is equal to
Held on 16 Apr 2018 · Verified 6 Jul 2026.
(2,1)
(3,1)
(3,2)
(31,2)
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