Why Is a Separable Differential Equation Always Exact?

A first-order differential equation is exact if it has a conserved quantity. For example, separable equations are always exact, since by definition they are of the form: M(y)y + N(t)=0, ... so ϕ(t, y) = A(y) + B(t) is a conserved quantity.

Is every separable de exact?

Every separable equation is exact. ... xdx+ydy=2 x d x + y d y = 2 , which is a separable differential equation.

Can an ode be separable but not exact?

Separable first-order ODEs are ALWAYS exact. But many exact ODEs are NOT separable.

James H. Sterling

James H. Sterling

Environmental Science & Climate Journalist

James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.