Find the solution of the initial value problem x2 y' + x y = 1, y(1) = 2, x > 0. Find the area enclosed by the line y = x - 1 and the parabola y2 = 2x + 6. [5+5]
Find the solution of the initial value problem $x^2 y' + x y = 1$, $y(1) = 2$, $x > 0$.
Find the area enclosed by the line $y = x - 1$ and the parabola $y^2 = 2x + 6$. [5+5]
--- Given data: $x^2 y' + xy = 1$, $; y(1) = 2$, $; x 0$ Divide by $x^2$: $$\frac{dy}{dx} + \frac{1}{x}y = \frac{1}{x^2}$$ So $P = \dfrac{1}{x}$, $Q = \dfrac{1}{x^2}$. $$\text{I.F.} = e^{\int \frac{1}{x},dx} = e^{\ln x} = x$$ $$y\cdot x = \int \frac{1}{x^2}\cdot x,dx + C = \int \frac{1}{x},d...