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All Textbook Solutions for Differential Equations

3E4E5E6E7E8E9E10E11E12E13E14E15E16E17E18E19E20E1E2E3E4E5E6E7E8E9E10E11E12E13E14E15E16E17E18E19E20E21E22E23E24E1E2E3E4E5E6E7E8E1E2E3E4E5E6E7E8E9E10E1RE2RE3RE4RE5RE6RE7RE8RE9RE10RE11RE12RE13RE14RE15RE16RE17RE18RE19RE20RE21RE22RE23RE24RE25RE26RE27RE28RE29REIn Exercises 1-4, compute the Laplace transform of the given function from the definition. 1. f(t)=3 (a constant function)In Exercises 1-4, compute the Laplace transform of the given function from the definition. 2. g(t)=tIn Exercises 1-4, compute the Laplace transform of the given function from the definition. 3.h(t)=5t24EVerify that L[tn]=n!sn+1(s0) [Hint: A rigorous derivation of this formula requires mathematical induction.]Using L[tn]=n!sn+1(s0) give a formula for the Laplace transform of an arbitrary n th degree polynomial p(t)=a0+a1t+a2t2++antn where the ai 's are constants.In Exercises 7-14, find the inverse Laplace transform of the given function. 71s38E9E10E11E12E13E14EIn Exercises 15-24 (a) compute the Laplace transform of both sides of the equation; (b) substitute the initial conditions and solve for the Laplace transform of the solution; (c) find a function whose Laplace transform is the same as the solution; and (d) check that you have found the solution of the initial-value problem. 15. dydt=y+e2t,y(0)=216EIn Exercises 15-24 (a) compute the Laplace transform of both sides of the equation; (b) substitute the initial conditions and solve for the Laplace transform of the solution; (c) find a function whose Laplace transform is the same as the solution; and (d) check that you have found the solution of the initial-value problem. 17. dydt+7y=1,y(0)=318E19E20E21E22E23E24E25E26E27E1E2E3E4E5E6E7E8E9E10E11E12EIn Exercises 8-13, solve the given initial-value problem. 13. dydt=y+u1(t)(t1),y(0)=214E15E16E17E18E19E20E1E2E3E4E5E6E7E8E9E10EIn Exercises 11-14, write the given quadratic in the form (s+)2+2 (that is, complete the square). 11.s2+2s+1012E13E14E15E16EIn Exercises 1518 , compute the inverse Laplace transform of the given functions using the results of Exercises 1114 . 17.2s+3s2+s+118E19E20E21E22E23E24E25E26EIn Exercises 2734 (a) compute the Laplace transform of both sides of the differential equation, (b) substitute in the initial conditions and simplify to obtain the Laplace transform of the solution, and (c) find the solution by taking the inverse Laplace transform. 27. d2ydt2+4y=8,y(0)=11,y(0)=528E29E30EIn Exercises 27-34 (a) compute the Laplace transform of both sides of the differential equation, (b) substitute in the initial conditions and simplify to obtain the Laplace transform of the solution, and (c) find the solution by taking the inverse Laplace transform. 31. d2ydt2+4y=cos2t,y(0)=2,y(0)=032E33E34E35E1E2E3E4E5E6E7E8E9E10E1E2EIn Exercises 14, compute the convolution f*g for the given functions f and g . 3. f(t)=cost and g(t)=u2(t)In Exercises 14, compute the convolution f*g for the given functions f and g . 4. f(t)=u2(t) and g(t)=u3(t)5E6E7E8E9E10E11E1E2E3E4E5E6E7E8E9E10E1RE2RE3RE4RE5RE6RE7RE8RE9RE10RE11RE12RE13RE14RE15RE16RE17RE18RE19RE20RE21RE22RE23RE24RE25RE26RE27RE28RE29RE30RE1E2E3E4E5E6E7E8E9E10E11E12E1E2E3E4E5E6E7E8E9E10E11E12E13E14E15E16E17E1E2E3E4E5E6E7E8E1E2E3E1RE2RE3RE4RE5RE6RE7RE1E2E3E4E5E6E7E8E9E10E11E12E13E14E15E16E17E18E19E20E21E