Transcription of Systems of Differential Equations
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Chapter 11 Systems of : Examples of : Basic First-order System : Structure of Linear : Matrix : The Eigenanalysis Method forx = : Jordan Form and : Nonhomogeneous Linear : Second-order : Numerical Methods for SystemsLinear systemis a system of differential equa-tions of the formx 1=a11x1+ +a1nxn+f1,x 2=a21x1+ +a2nxn+f2,..x m=am1x1+ +amnxn+fm,(1)where =d/dt. Given are the functionsaij(t) andfj(t) on some intervala < t < b. The unknowns are the functionsx1(t), .. ,xn(t).The system is calledhomogeneousif allfj= 0, otherwise it is Notation for non-homogeneous system oflinear Equations (1) is written as the equivalent vector-matrix systemx =A(t)x+f(t),wherex= ,f= , A= a11.
partment X is done by writing dX/dt for the left side of the differential equation and then algebraically adding the input and output rates to ob-tain the right side of the differential equation, according to the balance law dX dt = sum of input rates −sum of output rates By convention, a compartment with no arriving arrowhead has input
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