Choose the correct options for the following questions.
A function is said to be even when
Verified
Difficulty: Easy
A:
$f(x)=f(x)$
B:
$f(-x)=f(x)$
C:
$f(-x)=-f(x)$
D:
None of these
Evaluate $\mathop {\lim }\limits_{n \to \infty } {\left( {1 - \frac{1}{n}} \right)^{2n}}$
Difficulty: Easy
A:
$e$
B:
$e^{2}$
C:
$e^{-1}$
D:
$e^{-2}$
Evaluate $\mathop {\lim }\limits_{x \to 6} \left( {\frac{{\sqrt x - \sqrt 6 }}{{x - 6}}} \right)$:
Difficulty: Easy
A:
0
B:
$\sqrt{6}$
C:
$\frac{1}{2\sqrt{6}}$
D:
Limit does not exist
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