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

If $f(x)=3 x^3-9 x^2-27 x+15$, then the maximum value of $f(x)$ is ...........

A
$-66$
B
30
C
$-30$
D
66
2
MHT CET 2019 2nd May Morning Shift
MCQ (Single Correct Answer)
+2
-0

The equation of the plane passing through the point $(-1,2,1)$ and perpendicular to the line joining the points $(-3,1,2)$ and $(2,3,4)$ is

A
$r \cdot(5 \hat{i}+2 \hat{j}+2 \hat{k})=1$
B
$r \cdot(5 \hat{i}+2 \hat{j}+2 \hat{k})=-1$
C
$r \cdot(5 \hat{i}-2 \hat{j}+2 \hat{k})=-5$
D
$r \cdot(5 \hat{i}-2 \hat{j}-2 \hat{k})=1$
3
MHT CET 2019 2nd May Morning Shift
MCQ (Single Correct Answer)
+2
-0

If the lengths of the transverse axis and the latusrectum of a hyperbola are 6 and $\frac{8}{3}$ respectively, then the equation of the hyperbola is ............

A
$4 x^2-9 y^2=72$
B
$4 x^2-9 y^2=36$
C
$9 x^2-4 y^2=72$
D
$9 x^2-4 y^2=36$
4
MHT CET 2019 2nd May Morning Shift
MCQ (Single Correct Answer)
+2
-0

The value of $\tan ^{-1} \frac{1}{3}+\tan ^{-1} \frac{1}{5}+\tan ^{-1} \frac{1}{7}+\tan ^{-1} \frac{1}{8}$ is ...........

A
$\frac{11 \pi}{5}$
B
$\frac{\pi}{4}$
C
$\pi$
D
$\frac{3 \pi}{4}$
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