1
WB JEE 2011
MCQ (Single Correct Answer)
+1
-0.25

If $$y = 2{x^3} - 2{x^2} + 3x - 5$$, then for x = 2 and $$\Delta$$x = 0.1 the value of $$\Delta$$y is

A
2.002
B
1.9
C
0
D
0.9
2
WB JEE 2011
MCQ (Single Correct Answer)
+1
-0.25

The approximate value of $$\root 5 \of {33} $$ correct to 4 decimal places is

A
2.0000
B
2.1001
C
2.0125
D
2.0500
3
WB JEE 2011
MCQ (Single Correct Answer)
+1
-0.25

Let $$f(x) = {x^3}{e^{ - 3x}},\,x > 0$$. Then the maximum value of f(x) is

A
e$$-$$3
B
3e$$-$$3
C
27e$$-$$9
D
$$\infty$$
4
WB JEE 2023
MCQ (Single Correct Answer)
+1
-0.25
Change Language

Suppose $$f:R \to R$$ be given by $$f(x) = \left\{ \matrix{ 1,\,\,\,\,\,\,\,\,\,\,\mathrm{if}\,x = 1 \hfill \cr {e^{({x^{10}} - 1)}} + {(x - 1)^2}\sin {1 \over {x - 1}},\,\mathrm{if}\,x \ne 1 \hfill \cr} \right.$$

then

A
f'(1) does not exist
B
f'(1) exists and is zero
C
f'(1) exist and is 9
D
f'(1) exists and is 10
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