1
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+2
-0

The value of $$2 \tan ^{-1} \frac{1}{2}+\tan ^{-1} \frac{1}{7}$$

A
$$\tan ^{-1}\left(\frac{17}{31}\right)$$
B
$$\tan ^{-1}\left(\frac{19}{31}\right)$$
C
$$\tan ^{-1}\left(\frac{31}{17}\right)$$
D
$$\tan ^{-1}\left(\frac{31}{19}\right)$$
2
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+2
-0

$$\int \frac{\mathrm{e}^x(1+x)}{\cos ^2\left(\mathrm{e}^x \cdot x\right)} \mathrm{d} x=$$

A
$$-\cot \left(\mathrm{e}^x\right)+\mathrm{c}$$, where $$\mathrm{c}$$ is a constant of integration.
B
$$\tan \left(x \cdot \mathrm{e}^x\right)+\mathrm{c}$$, where $$\mathrm{c}$$ is a constant of integration.
C
$$\tan \left(\mathrm{e}^x\right)+\mathrm{c}$$, where $$\mathrm{c}$$ is a constant of integration.
D
$$-\cot \left(x \cdot \mathrm{e}^x\right)+\mathrm{c}$$, where $$\mathrm{c}$$ is a constant of integration.
3
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+2
-0

In a triangle $$\mathrm{ABC}$$, with usual notations, if $$\mathrm{m} \angle \mathrm{A}=60^{\circ}, \mathrm{b}=8, \mathrm{a}=6$$ and $$\mathrm{B}=\sin ^{-1} x$$, then $$x$$ has the value

A
$$\frac{\sqrt{3}}{2}$$
B
$$\frac{2}{\sqrt{3}}$$
C
$$2 \sqrt{3}$$
D
$$\frac{1}{2 \sqrt{3}}$$
4
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+2
-0

If variance of $$x_1, x_2 \ldots \ldots, x_n$$ is $$\sigma_x^2$$, then the variance of $$\lambda x_1, \lambda x_2, \ldots \ldots, \lambda x_{\mathrm{n}}(\lambda \neq 0)$$ is

A
$$\lambda \cdot \sigma_x$$
B
$$\lambda \cdot \sigma_x^2$$
C
$$\lambda^2 \cdot \sigma_x$$
D
$$\lambda^2 \cdot \sigma_x^2$$
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