1
GATE CE 2022 Set 2
MCQ (Single Correct Answer)
+1
-0.33

Consider the polynomial f(x) = x3 $$-$$ 6x2 + 11x $$-$$ 6 on the domain S, given by 1 $$\le$$ x $$\le$$ 3. The first and second derivatives are f'(x) and f''(x).

Consider the following statements :

I. The given polynomial is zero at the boundary points x = 1 and x = 3.

II. There exists one local maxima of f(x) within the domain S.

III. The second derivative f''(x) > 0 throughout the domains S.

IV. There exists one local minima f(x) within the domain S.

A
Only statements II and IV are correct.
B
Only statements I and IV are correct.
C
Only statements I, II and III are correct.
D
Only statements I, II and IV are correct.
2
GATE CE 2022 Set 2
MCQ (Single Correct Answer)
+1
-0.33

$$\int {\left( {x - {{{x^2}} \over 2} + {{{x^3}} \over 3} - {{{x^4}} \over 4} + ....} \right)dx} $$ is equal to :

A
$$ - {1 \over {1 - {x^2}}} + $$ Constant
B
$$ - {1 \over {1 - x}} + $$ Constant
C
$${1 \over {1 + {x^2}}} + $$ Constant
D
$${1 \over {1 + x}} + $$ Constant
3
GATE CE 2017 Set 2
MCQ (Single Correct Answer)
+1
-0.3
Let $$\,\,W = f\left( {x,y} \right),\,\,$$ where $$x$$ and $$y$$ are functions of $$t.$$ Then, according to the chain rule, $${{dw} \over {dt}}$$ is equal to
A
$${{dw} \over {dx}}{{dx} \over {dt}} + {{dw} \over {dy}}{{dt} \over {dt}}$$
B
$${{\partial w} \over {\partial x}}{{\partial x} \over {\partial t}} + {{\partial w} \over {\partial y}}{{\partial y} \over {\partial t}}$$
C
$${{\partial w} \over {\partial x}}{{dx} \over {dt}} + {{\partial w} \over {\partial y}}{{dy} \over {dt}}$$
D
$${{dw} \over {dx}}{{\partial x} \over {\partial t}} + {{dw} \over {dy}}{{\partial y} \over {\partial t}}$$
4
GATE CE 2017 Set 1
MCQ (Single Correct Answer)
+1
-0.3
Let $$x$$ be a continuous variable defined over the interval $$\left( { - \infty ,\infty } \right)$$, and $$f\left( x \right) = {e^{ - x - {e^{ - x}}}}.$$
The integral $$g\left( x \right) = \int {f\left( x \right)dx\,\,} $$ is equal to
A
$${e^{e - x}}$$
B
$${e^{ - {e^{ - x}}}}$$
C
$${e^{ - {e^x}}}$$
D
$${e^{ - x}}$$
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