Find the differential equation representing the curve $y = cx + c^2$, $c$ being arbitrary constant.
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → $y=x\left(\frac{dy}{dx}\right)+\left(\frac{dy}{dx}\right)^2$
Given $y = cx + c^2$ ...(i)
Differentiating (i) w.r.t. x, we get
$\frac{dy}{dx}= C$.
Substituting this value of $c$ in (i), we get
$y = x\frac{dy}{dx}+\left(\frac{dy}{dx}\right)^2$, which is the required differential equation of the given curve.