1
MHT CET 2019 2nd May Evening Shift
MCQ (Single Correct Answer)
+2
-0

If $P(6,10,10), Q(1,0,-5), R(6,-10, \lambda)$ are vertices of a triangle right angled at $Q$, then value of $\lambda$ is ............

A
0
B
1
C
3
D
2
2
MHT CET 2019 2nd May Evening Shift
MCQ (Single Correct Answer)
+2
-0

For L.P.P, maximize $z=4 x_1+2 x_2$ subject to $3 x_1+2 x_2 \geq 9, x_1-x_2 \leq 3, x_1 \geq 0, x_2 \geq 0$ has

A
infinite number of optimal solutions
B
unbounded solution
C
no solution
D
one optimal solution
3
MHT CET 2019 2nd May Evening Shift
MCQ (Single Correct Answer)
+2
-0

The function $f(x)=x^3-3 x$ is ............

A
increasing in $(-\infty,-1) \cup(1, \infty)$ and decreasing in $(-1,1)$
B
increasing in $(0, \infty)$ and decreasing in $(-\infty, 0)$
C
decreasing in $(0, \infty)$ and increasing in $(-\infty, 0)$
D
decreasing in $(-\infty,-1) \cup(1, \infty)$ and increasing in $(-1,1)$
4
MHT CET 2019 2nd May Evening Shift
MCQ (Single Correct Answer)
+2
-0

If $x=\sin \theta, y=\sin ^3 \theta$ then $\frac{d^2 y}{d x^2}$ at $\theta=\frac{\pi}{2}$ is ............

A
3
B
6
C
$\frac{1}{6}$
D
$\frac{1}{3}$
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