1
TS EAMCET 2023 (Online) 12th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

If the system of equations

$x+k y+3 z=-2$,

$4 x+3 y+k z=14,$

$2 x+y+2 z=3$ can be solved by matrix inversion method, then

A
$k \neq 0$ and $\frac{9}{2}$
B
$k=0$ or $\frac{9}{2}$
C
$k \neq \frac{1}{2}$ and 2
D
$k=\frac{1}{2}$ or 2
2
TS EAMCET 2023 (Online) 12th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
If the slope of the tangent drawn to the curve $y=e^{a+b x^2}$ at the point $P(1,1)$ is -2 , then the value of $2 a-3 b$ is
A
5
B
6
C
7
D
8
3
TS EAMCET 2023 (Online) 12th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
If the tangent drawn at the point $P$ on the circle $x^2+y^2+6 x+6 y=2$ meets the straight line $5 x-2 y+6=0$ at a point $Q$ on the $Y$-axis, then the length of $P Q$ is
A
5
B
4
C
2
D
1
4
TS EAMCET 2023 (Online) 12th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
If $n$ is a positive integer greater than 1 and $I_n=\int \frac{\sin n x}{\sin x} d x$, then $I_{n+1}-I_{n-1}=$
A
$\frac{2}{n-1} \cos (n-1) x$
B
$\frac{2}{n-1} \sin (n-1) x$
C
$\frac{2}{n} \cos n x$
D
$\frac{2}{n} \sin n x$
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