ddx[u(x)v(x)]=\dfrac{d}{dx}\bigl[u(x) v(x)\bigr] =dxd[u(x)v(x)]=Auvu vuvBu′+v′u' + v'u′+v′Cu′v+uv′u' v + u v'u′v+uv′check_circleDu′v′u' v'u′v′ExplanationProduct rule (Leibniz form).