1
AP EAPCET 2024 - 22th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
If $\cos \alpha+4 \cos \beta+9 \cos \gamma=0$ and $\sin \alpha+4 \sin \beta+9 \sin \gamma=0$, then 81 $\cos (2 \gamma-2 \alpha)-16 \cos (2 \beta-2 \alpha)$ is equal to
A
$1+8 \cos (\beta-\alpha)$
B
$\cos (\beta-\alpha)$
C
$1-36 \cos (\beta-\alpha)$
D
$1+6 \cos (\beta-\alpha)$
2
AP EAPCET 2024 - 22th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
If ' $a$ ' is a rational number, then the roots of the equation $x^2-3 a x+a^2-2 a-4=0$ are
A
rational and equal numbers
B
different real numbers
C
different rational numbers only
D
not real numbers
3
AP EAPCET 2024 - 22th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The set of all real values ' $a$ ' for which $-1<\frac{2 x^2+a x+2}{x^2+x+1}<3$ holds for all real values of $x$ is

A
$(-7,5)$
B
$(5, \infty)$
C
$(1,5)$
D
$(-\infty, 1)$
4
AP EAPCET 2024 - 22th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The quotient, when $3 x^5-4 x^4+5 x^3-3 x^2+6 x-8$ is divided by $x^2+x-3$ is

A
$3 x^2-7 x-21$
B
$3 x^3-7 x^2+21 x-45$
C
$3 x^4-7 x^3+21 x^2-45+114$
D
$114 x-143$
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