Q119 / 160 · AP EAMCET 2024 (23 May Shift 1) · Mathematics

The differential equation for which $a x+b y=1$ is general solution is

  • A
    $\frac{d y}{d x}=x+c$
  • B
    $y \frac{d^2 y}{d x^2}+x=1$
  • Correct answer
    C
    $\frac{d y}{d x}$
  • D
    $\frac{d^3 y}{d x^3}=0$

Solution

$a x+b y=1$ Differentiating w.r.t. $x$ $a+b \frac{d y}{d x}=0 \Rightarrow \frac{d y}{d x}=\frac{-a}{b}$
Differentiating w.r.t. $x$ $\Rightarrow \frac{d^2 y}{d x^2}=0$ is the required differential equation.

Hence, the correct answer is option: 'C'.

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