1
WB JEE 2017
MCQ (Single Correct Answer)
+1
-0.25
Change Language
Let $$f(x) = \left\{ {\matrix{ {{{{x^p}} \over {{{(\sin x)}^q}}},} & {if\,0 < x \le {\pi \over 2}} \cr {0,} & {if\,x = 0} \cr } } \right.$$, $$(p,q \in R)$$. Then, Lagrange's mean value theorem is applicable to f(x) in closed interval [0, x]
A
for all p, q
B
only when p > q
C
only when p < q
D
for no value of p, q
2
WB JEE 2017
MCQ (Single Correct Answer)
+1
-0.25
Change Language
$$\mathop {\lim }\limits_{x \to 0} {(\sin x)^{2\tan x}}$$ is equal to
A
2
B
1
C
0
D
does not exist
3
WB JEE 2017
MCQ (Single Correct Answer)
+2
-0.5
Change Language
Let for all x > 0, $$f(x) = \mathop {\lim }\limits_{n \to \infty } n({x^{1/n}} - 1)$$, then
A
$$f(x) + f\left( {{1 \over x}} \right) = 1$$
B
f(xy) = f(x) + f(y)
C
f(xy) = xf(y) + yf(x)
D
f(xy) = xf(x) + yf(y)
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