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

$$\int x \sqrt{\frac{2 \sin \left(x^2+1\right)-\sin 2\left(x^2+1\right)}{2 \sin \left(x^2+1\right)+\sin 2\left(x^2+1\right)}} d x=$$

A
$$\log \left(\sec \left(\frac{x^2+1}{2}\right)\right)+$$ c, where c is a constant of integration.
B
$$\log \left(\frac{x^2+1}{2}\right)+c$$, where $$\mathrm{c}$$ is a constant of integration.
C
$$\log \left(\sin \left(\frac{x^2+1}{2}\right)\right)+$$ c, where c is a constant of integration.
D
$$2 \log \left(x^2+1\right)+\mathrm{c}$$, where $$\mathrm{c}$$ is a constant of integration.
2
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+2
-0
If the lines $\frac{x-1}{2}=\frac{y+1}{3}=\frac{z-1}{4}$ and $x-3=\frac{y-\mathrm{k}}{2}=\mathrm{z}$ intersect, then the value of $\mathrm{k}$ is
A
$$\frac{3}{2}$$
B
$$\frac{-2}{9}$$
C
$$\frac{-2}{3}$$
D
$$\frac{9}{2}$$
3
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+2
-0

$$\text { For all real } x \text {, the minimum value of } \frac{1-x+x^2}{1+x+x^2} \text { is }$$

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

If $$\bar{a}=\hat{i}+4 \hat{j}+2 \hat{k}, \bar{b}=3 \hat{i}-2 \hat{j}+7 \hat{k}, \bar{c}=2 \hat{i}-\hat{j}+4 \hat{k}$$, then a vector $$\overline{\mathrm{d}}$$ which is parallel to vector $$\overline{\mathrm{a}} \times \overline{\mathrm{b}}$$ and which $$\overline{\mathrm{c}} \cdot \overline{\mathrm{d}}=15$$, is

A
$$30 \hat{i}-\hat{j}-14 \hat{k}$$
B
$$90 \hat{\mathrm{i}}-3 \hat{\mathrm{j}}-42 \hat{\mathrm{k}}$$
C
$$90 \hat{\mathrm{i}}+\hat{\mathrm{j}}-7 \hat{\mathrm{k}}$$
D
$$30 \hat{\mathrm{i}}-3 \hat{\mathrm{j}}+7 \hat{\mathrm{k}}$$
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