1
MHT CET 2023 12th May Morning Shift
MCQ (Single Correct Answer)
+2
-0

If the variance of the numbers $$-1,0,1, \mathrm{k}$$ is 5, where $$\mathrm{k} > 0$$, then $$\mathrm{k}$$ is equal to

A
$$2 \sqrt{\frac{10}{3}}$$
B
$$2 \sqrt{6}$$
C
$$4 \sqrt{\frac{5}{3}}$$
D
$$\sqrt{6}$$
2
MHT CET 2023 12th May Morning Shift
MCQ (Single Correct Answer)
+2
-0

The differential equation $$\cos (x+y) \mathrm{d} y=\mathrm{d} x$$ has the general solution given by

A
$$y=\sin (x+y)+c$$, where $$\mathrm{c}$$ is a constant.
B
$$y=\tan (x+y)+\mathrm{c}$$, where $$\mathrm{c}$$ is a constant
C
$$y=\tan \left(\frac{x+y}{2}\right)+\mathrm{c}$$, where $$\mathrm{c}$$ is a constant
D
$$y=\frac{1}{2} \tan (x+y)+\mathrm{c}$$, where $$\mathrm{c}$$ is a constant
3
MHT CET 2023 12th May Morning Shift
MCQ (Single Correct Answer)
+2
-0

The area of the region bounded by the curves $$y=\mathrm{e}^x, y=\log x$$ and lines $$x=1, x=2$$ is

A
$$(\mathrm{e}-1)^2$$ sq. units
B
$$\left(\mathrm{e}^2-\mathrm{e}+1\right)$$ sq. units
C
$$\left(\mathrm{e}^2-\mathrm{e}+1-2 \log 2\right)$$ sq. units
D
$$\left(\mathrm{e}^2+\mathrm{e}-2 \log 2\right)$$ sq. units
4
MHT CET 2023 12th May Morning Shift
MCQ (Single Correct Answer)
+2
-0

If $$x=-1$$ and $$x=2$$ are extreme points of $$\mathrm{f}(x)=\alpha \log x+\beta x^2+x, \alpha$$ and $$\beta$$ are constants, then the value of $$\alpha^2+2 \beta$$ is

A
$$-3$$
B
3
C
$$\frac{3}{2}$$
D
5
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