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

Derivative of $$\tan ^{-1}\left(\frac{\sqrt{1+x^2}-\sqrt{1-x^2}}{\sqrt{1+x^2}+\sqrt{1-x^2}}\right)$$ w.r.t. $$\cos ^{-1} x^2$$ is

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

A binomial random variable $$\mathrm{X}$$ satisfies $$9. p(X=4)=p(X=2)$$ when $$n=6$$. Then $$p$$ is equal to

A
$$\frac{1}{4}$$
B
$$\frac{1}{2}$$
C
$$\frac{1}{8}$$
D
$$\frac{1}{5}$$
3
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+2
-0

If in $$\triangle \mathrm{ABC}$$, with usual notations, $$a \cdot \cos ^2 \frac{C}{2}+c \cos ^2 \frac{A}{2}=\frac{3 b}{2}$$, then

A
a, b, c are in G.P.
B
a, b, c are in H.P.
C
a, b, c are in A.P.
D
a, b, c are in Arithmetico Geometric Progression
4
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+2
-0

The lines $$\frac{x-1}{3}=\frac{y+1}{2}=\frac{z-1}{5} \quad$$ and $$\frac{x+2}{4}=\frac{y-1}{3}=\frac{z+1}{2}$$

A
intersect each other and point of intersection is $$(2,1,3)$$
B
intersect each other and point of intersection is $$(3,2,4)$$
C
intersect each other and point of intersection is $$(-2,3,3)$$
D
do not intersect.
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