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Introduction 1. Introduction 4. The rate at which the drug leaves the bloodstream is given by 0. Introduction b Based on the direction field, the amount of drug in the bloodstream approaches the equilibrium level of mg within a few hours. This is exactly the form given by Eq. The differential equation is second order, since the highest derivative in the equation is of order two.
The equation is linear, since the left hand side is a linear function of y and its derivatives. The differential equation is fourth order, since the highest derivative of the function y is of order four. The equation is also linear, since the terms containing the dependent variable is linear in y and its derivatives.
The differential equation is second order. Furthermore, the equation is nonlinear, since the dependent variable y is an argument of the sine function, which is not a linear function. Hence the given function is a solution. Clearly, y1 t is a solution.
Hence both functions are solutions of the differential equation. The order of the partial differential equation is two, since the highest derivative, in fact each one of the derivatives, is of second order. The equation is linear, since the left hand side is a linear function of the partial derivatives. The partial differential equation is fourth order, since the highest derivative, and in fact each of the derivatives, is of order four. The partial differential equation is second order, since the highest derivative of the function u x, y is of order two.
The negative sign is included since positive moments are counterclockwise.