MATH 240 Final: MATH 240 KSU Final Exam u05l

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Please show all work. answers with no work will receive non credit. no calculatrs or notes are allowed on this exam. The formula for variation of parameters is: yp = y1(x)z y2(t)g(t) W (y1, y2)(t) dt: (10 pts) solve the following di erential equation: dy dx. 5x 2y y + 2x y(0) = 1: (10 pts) convert 2 2cos(7x) + 2 2sin(7x) to acos( x ), (10 pts) solve the following di erential equation: y . 3 x y = exx4: (10 pts) find the taylor series and radius of convergence for the function f (x) = x. 1 3x: (10 pts) find and classify the equiblibrium points of dp dt. = (p 1. 5)(p 4)p and label the threshold and carrying capacity of this population model: (10 pts) solve the following initial value problem x + 7x . 8x = (t) y(0) = 1; y (0) = 2: (10 pts) find the solution to the boundary value problem x .