1
AP EAPCET 2025 - 21st May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The differential equation corresponding to the family of parabolas whose axis is along $x=1$ is

A

$\frac{d^2 y}{d x^2}-(x-1) \frac{d y}{d x}=0$

B

$(x-1) \frac{d^2 y}{d x^2}-\frac{d y}{d x}=0$

C

$\frac{d^2 y}{d x^2}+(x-1) \frac{d y}{d x}-y=0$

D

$(x-1) \frac{d^2 y}{d x^2}+\frac{d y}{d x}=0$

2
AP EAPCET 2025 - 21st May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The general solution of the equation $\frac{d y}{d x}+\frac{1}{x} y=\frac{1}{x} e^x$

A

$y=x e^x+c$

B

$y=x e^x+c e^{-x}$

C

$y=\frac{e^x+c}{x}$

D

$y=\frac{e^{-x}+c x}{x}$

3
AP EAPCET 2025 - 21st May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The general solution of the differential equation

$$ \left(x \sin \frac{y}{x}\right) d y=\left(y \sin \frac{y}{x}-x\right) d x $$

A

$\log x+\tan \frac{y}{x}=C$

B

$\log x+\cos \frac{y}{x}=C$

C

$\log x-\sin \frac{y}{x}=C$

D

$\log x-\cos \frac{y}{x}=C$

4
AP EAPCET 2025 - 21st May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Among the following, the physical quantity having the dimensions of Young's modulus is

A

strain

B

gravitational potential

C

surface energy

D

energy density