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Continuity and Differentiability Class 12 Multiple Choice Test

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Continuity and Differentiability Class 12 (120501)


General Instruction:

1. There are 15 MCQ’s in the Test.

2. Passing %age is 50.

3. After time gets over, test will be submitted itself.

Your Information …

1 / 15

If \( f(x) = \sin^{-1}(e^x) \), what is \( f'(x) \)?

A) \( \frac{e^x}{\sqrt{1-e^{2x}}} \)

B) \( \frac{e^x}{1+e^{2x}} \)

C) \( \frac{1}{\sqrt{1-e^{2x}}} \)

D) \( e^x \)

2 / 15

If \( f(x) = e^{2x} \), what is \( f”(x) \)?

A) \( 2e^{2x} \)
B) \( 4e^{2x} \)
C) \( e^{2x} \)
D) \( 4x \cdot e^{2x} \)

3 / 15

What is the derivative of \( \cos^{-1}(x) \)?

A) \( \frac{1}{\sqrt{1-x^2}} \)

B) \( \frac{1}{1+x^2} \)

C) \( -\frac{1}{\sqrt{1-x^2}} \)

D) \( \frac{1}{|x|\sqrt{x^2-1}} \)

4 / 15

5 / 15

What is the value of ‘k’ for which the function \(f(x) = \begin{cases} \frac{\sin(5x)}{3x} & \text{if } x \neq 0 \\ k & \text{if } x = 0 \end{cases}\) is continuous at \(x=0\)?

a) \(\frac{3}{5}\)

b) \(\frac{5}{3}\)

c) \(5\)

d) \(3\)

6 / 15

7 / 15

8 / 15

9 / 15

Given \( y = x^2 \cdot e^x \), what is \( \frac{dy}{dx} \)?

A) \( 2x \cdot e^x + x^2 \cdot e^x \)

B) \( 2x \cdot e^x \)

C) \( x^2 \cdot e^x \)

D) \( e^x \)

10 / 15

11 / 15

If \( x(t) = e^t \) and \( y(t) = \ln(t) \), what is \( \frac{dy}{dx} \)?

A) \( \frac{1}{t} \)

B) \( \frac{1}{e^t} \)

C) \( t \)

D) \( \frac{t}{e^t} \)

12 / 15

13 / 15

What is the derivative of \( \sec^{-1}{x} \)?

A) \( \frac{1}{x\sqrt{x^2-1}} \)

B) \( \frac{1}{\sqrt{x^2-1}} \)

C) \( \frac{1}{|x|\sqrt{x^2-1}} \)

D) \( -\frac{1}{|x|\sqrt{x^2-1}} \)

14 / 15

Given \( x = a \cos(t) \) and \( y = a \sin(t) \), what is \( \frac{dy}{dx} \)?

A) \( \tan(t) \)

B) \( \cot(t) \)

C) \( \sin(t) \)

D) \( \cos(t) \)

15 / 15

Given \( x^2 + y^2 = 1 \), what is \( \frac{dy}{dx} \) at any point on the curve?

A) \( -\frac{x}{y} \)

B) \( \frac{x}{y} \)

C) \( -\frac{y}{x} \)

D) \( \frac{y}{x} \)

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Thank you for answering the multiple choice test

Pos.NameScoreDuration
1Rannaggam Singh Mann73 %14 minutes 12 seconds
2Ekam Singh Brar60 %15 minutes
3Anhad40 %15 minutes

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