1
AP EAPCET 2025 - 27th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

If $(a+\sqrt{2} b \cos x)(a-\sqrt{2} b \cos y) =a^2-b^2$, where $a>b>0$, then at $\left(\frac{\pi}{4}, \frac{\pi}{4}\right), \frac{d y}{d x}=$

A

$\frac{a+b}{a-b}$

B

$\frac{a-b}{a+b}$

C

$\frac{a-2 b}{a+2 b}$

D

$\frac{2 a+b}{2 a-b}$

2
AP EAPCET 2025 - 27th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Consider the quadratic equation $a x^2+b x+c=0$, where $2 a+3 b+6 c=0$ and let $g(x)=\frac{a x^3}{3}+\frac{b x^2}{2}+c x$

Statement I The given quadratic equation $a x^2+b x+c=0$ has atleast one root in $(0,1)$.

Statement II Rolle's theorem is applicable to $g(x){\text {on }}$ [0, 1].

Then

A

Statement I is false, Statement II is true

B

Statement I is true, Statement II is false

C

Statement I is true, Statement II is true but Statement IIs not a correct explanation of Statement I

D

Statement I is true, Statement II is true and Statement I is a correct explanation of Statement I

3
AP EAPCET 2025 - 27th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The difference between the absolute maximum and absolute minimum values of the function $f(x)=2 x^3-15 x^2+36 x-30$ on $[-1,4]$ is

A

80

B

1

C

85

D

4

4
AP EAPCET 2025 - 27th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

If $f(x)=x e^{x(1-x)}, x \in R$, then $f(x)$ is

A

increasing on $\left[-\frac{1}{2}, 1\right]$

B

decreasing on $R$

C

increasing on $R$

D

decreasing on $\left[-\frac{1}{2}, 1\right]$