1
MHT CET 2023 10th May Morning Shift
MCQ (Single Correct Answer)
+2
-0

If $$y=\cos ^{-1}\left(\frac{\mathrm{a}^2}{\sqrt{x^4+\mathrm{a}^4}}\right)$$, then $$\frac{\mathrm{d} y}{\mathrm{~d} x}$$ is

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

The population $$\mathrm{P}=\mathrm{P}(\mathrm{t})$$ at time $$\mathrm{t}$$ of certain species follows the differential equation $$\frac{d P}{d t}=0.5 P-450$$. If $$P(0)=850$$, then the time at which population becomes zero is

A
$$2 \log 18$$
B
$$\log 9$$
C
$$\frac{1}{2} \log 18$$
D
$$\log 18$$
3
MHT CET 2023 10th May Morning Shift
MCQ (Single Correct Answer)
+2
-0

The vertices of the feasible region for the constraints $$x+y \leq 4, x \leq 2, y \leq 1, x+y \geq 1, x, y \geq 0$$ are

A
$$(1,0),(2,0),(2,1),(0,4)$$
B
$$(0,1),(4,0),(0,4),(1,0)$$
C
$$(1,0),(2,0),(2,1),(0,1)$$
D
$$(1,0),(4,0),(2,1),(0,4)$$
4
MHT CET 2023 10th May Morning Shift
MCQ (Single Correct Answer)
+2
-0

The value of $$\tan \frac{\pi}{8}$$ is

A
$$1-\sqrt{2}$$
B
$$-1-\sqrt{2}$$
C
$$\sqrt{2}-1$$
D
$$\sqrt{2}+1$$
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