Match List-I with List-II
|
List-I Differential Equation |
List-II General solution |
|
(A) $\frac{dy}{dx}=\frac{y}{x}; x≠0$ |
(I) $y = cx$: c is an arbitray constant |
|
(B) $xdx – ydy= 0; y ≠ 0, x ≠ 0$ |
(II) $x^2-y^2 = c$: c is an arbitray constant |
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(C) $\frac{(x^2-1)}{y^2+1}\frac{dy}{dx}= 1$ |
(III) $2x+3y= c$: c is an arbitray constant |
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(D) $2dx+3dy = 0$ |
(IV) $(x^3-y^3) = c + 3(x + y)$: c is an arbitray constant |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → (A)-(I), (B)-(II), (C)-(IV), (D)-(III)
|
List-I Differential Equation |
List-II General solution |
|
(A) $\frac{dy}{dx}=\frac{y}{x}; x≠0$ |
(I) $y = cx$: c is an arbitray constant |
|
(B) $xdx – ydy= 0; y ≠ 0, x ≠ 0$ |
(II) $x^2-y^2 = c$: c is an arbitray constant |
|
(C) $\frac{(x^2-1)}{y^2+1}\frac{dy}{dx}= 1$ |
(IV) $(x^3-y^3) = c + 3(x + y)$: c is an arbitray constant |
|
(D) $2dx+3dy = 0$ |
(III) $2x+3y= c$: c is an arbitray constant |
(A) $\frac{dy}{dx}=\frac{y}{x}$
Integrating:
$\frac{dy}{y}=\frac{dx}{x}$
$\ln y=\ln x + c$
$y=cx$
Matches (I)
(B) $x\,dx - y\,dy = 0$
Integrating:
$\int x\,dx = \int y\,dy$
$\frac{x^2}{2} = \frac{y^2}{2} + c$
$x^2 - y^2 = c$
Matches (II)
(C) $\frac{(x^2-1)}{y^2+1}\frac{dy}{dx}=1$
Rewriting:
$(x^2-1)\,dx = (y^2+1)\,dy$
Integrating:
$\int (x^2-1)\,dx = \int (y^2+1)\,dy$
$\frac{x^3}{3} - x = \frac{y^3}{3} + y + c$
$x^3 - y^3 = c + 3(x + y)$
Matches (IV)
(D) $2\,dx + 3\,dy = 0$
Integrating:
$2x + 3y = c$
Matches (III)
Final Matching:
(A) → (I), (B) → (II), (C) → (IV), (D) → (III)