Given a differential equation, (re + sin(3x))x +(xr'e -2 cos(y))ảy = 0. a) Show that the differential equation is exact. b) Find the general solution, f (x, y). c) Find the particular solution if y(0)=r. Answer: xe 1 1 f(x.y)= cos (3x)– 2 sin y = 3 3

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Differential Equations

Have you ever observed the movement of the satellites and rockets or how the planets go around the sun in their orbits? How will you determine their motion? Definitely they follow some scientific laws and these kinds of problems are framed as differential equations.