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

The domain of the function given by $$2^x+2^y=2$$ is

A
$$0< x \leq 1$$
B
$$0 \leq x \leq 1$$
C
$$-\infty < x \leq 0$$
D
$$-\infty < x < 1$$
2
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+2
-0

If $$\mathrm{f}(x)=x \mathrm{e}^{x(1-x)}, x \in \mathrm{R}$$, then $$\mathrm{f}(x)$$ is

A
increasing in $$\left[-\frac{1}{2}, 1\right]$$
B
decreasing $$\mathrm{R}$$
C
increasing in $$\mathrm{R}$$
D
decreasing in $$\left[-\frac{1}{2}, 1\right]$$
3
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+2
-0

The solution of the differential equation $$\frac{\mathrm{d} y}{\mathrm{~d} x}=\frac{1+y^2}{1+x^2}$$ is

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

If $$\bar{a}, \bar{b}, \bar{c}$$ are three vectors such that $$\overline{\mathrm{a}} \cdot(\overline{\mathrm{b}}+\overline{\mathrm{c}})+\overline{\mathrm{b}} \cdot(\overline{\mathrm{c}}+\overline{\mathrm{a}})+\overline{\mathrm{c}} \cdot(\overline{\mathrm{a}}+\overline{\mathrm{b}})=0 \quad$$ and $$\quad|\overline{\mathrm{a}}|=1$$, $$|\bar{b}|=8$$ and $$|\bar{c}|=4$$, then $$|\bar{a}+\bar{b}+\bar{c}|$$ has the value _________.

A
81
B
9
C
5
D
4
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