## An Elementary Course in Partial Differential EquationsAn Elementary Course in Partial Differential Equations is a concise, 1-term introduction to partial differential equations for the upper-level undergraduate/graduate course in Mathematics, Engineering and Science. Divided into two accessible parts, the first half of the text presents first-order differential equations while the later half is devoted to the study of second-order partial differential equations. Numerous applications and exercises throughout allow students to test themselves on key material discussed. |

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90 and g arbitrary function auxiliary equations boundary conditions canonical form Cauchy problem characteristic curves characteristic strip complete integral continuously differentiable functions d’Alembert’s solution deﬁned Deﬁnition Diﬁerential Dirichlet problem domain eigenvalues envelope Example Exercise F(ac family of characteristic ﬁnd Find a complete Find the integral ﬁrst order p.d.e. Fourier transform function 11 function of 90 g(ac given equation given p.d.e. Green’s harmonic function heat conduction Hence hyperbolic implies independent variables initial conditions initial curve initial data curve initial strip integral surface Laplace’s equation Lemma linear Monge cone Neumann problem non-linear Note Observe one-parameter family order partial differential ordinary differential equations parabolic parameter parametric equations partial differential equations Pfafﬁan differential equation Poisson integral formula qg(s quasi-linear equation respect to ac Riemann function satisﬁes second order Solve string sub-family system of ordinary tangent plane u(ac unique wave equation z(ac