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

The vector equation of the line $$2 x+4=3 y+1=6 z-3$$ is

A
$$\overline{\mathrm{r}}=\left(2 \hat{\mathrm{i}}+\frac{1}{3} \hat{\mathrm{j}}+\frac{1}{2} \hat{\mathrm{k}}\right)+\lambda(3 \hat{\mathrm{i}}+2 \hat{\mathrm{j}}+\overline{\mathrm{k}})$$
B
$$\overline{\mathrm{r}}=\left(-2 \hat{\mathrm{i}}-\frac{1}{3} \hat{\mathrm{j}}+\frac{1}{2} \hat{\mathrm{k}}\right)+\lambda(3 \hat{\mathrm{i}}+2 \hat{\mathrm{j}}+\hat{\mathrm{k}})$$
C
$$\overline{\mathrm{r}}=(2 \hat{\mathrm{i}}+\hat{\mathrm{j}}+\hat{\mathrm{k}})+\lambda(3 \hat{\mathrm{i}}+2 \hat{\mathrm{j}}+\overline{\mathrm{k}})$$
D
$$\overline{\mathrm{r}}=(-2 \hat{\mathrm{i}}-\hat{\mathrm{j}}+\hat{\mathrm{k}})+\lambda(3 \hat{\mathrm{i}}+2 \hat{\mathrm{j}}+\hat{\mathrm{k}})$$
2
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+2
-0

If $$\overline{\mathrm{a}}$$ and $$\overline{\mathrm{b}}$$ are two unit vectors such that $$\overline{\mathrm{a}}+2 \overline{\mathrm{b}}$$ and $$5 \bar{a}-4 \bar{b}$$ are perpendicular to each other, then the angle between $$\bar{a}$$ and $$\bar{b}$$ is

A
$$\left(\frac{\pi}{4}\right)$$
B
$$\left(\frac{\pi}{3}\right)$$
C
$$\cos ^{-1}\left(\frac{1}{3}\right)$$
D
$$\cos ^{-1}\left(\frac{2}{7}\right)$$
3
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+2
-0

$$\int \frac{\log (\cot x)}{\sin 2 x} d x=$$

A
$$-\log (\cot x)^2+c$$, where c is constant of integration.
B
$$2(\log (\cot x))^2+c$$, where c is constant of integration.
C
$$\frac{-1}{4}(\log (\sin x))^2+c$$, where c is constant of integration.
D
$$\frac{-1}{4}(\log (\cot x))^2+\mathrm{c}$$, where c is constant of integration.
4
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+2
-0

$$\text { If } y=\sqrt{\frac{1-\sin ^{-1}(x)}{1+\sin ^{-1}(x)}} \text {, then } \frac{\mathrm{d} y}{\mathrm{~d} x} \text { at } x=0 \text { and } y=1 \text { is }$$

A
$$-2$$
B
$$-1$$
C
1
D
2
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