matlab期末作业(matlab期末作业)
mat lab期末作业(matlab期末作业) The final assignments are as follows: 1. solving differential equations, drawing the solution function diagram. ? ? ? ? ? ? ? ? ? ? ? ? Five (0) One (0) Three Three Y Y X Y 0 [t, x] =ode45 ( myodefun , tspan, xO): 〃Plot〃(T, X (l), g*‘,t, X (⑵, The output graph is as follows: Zero Five Ten Fifteen Twenty Twenty-five Thirty -0. 5 Zero Zero point five One 2. A set of sparse data is generated, and the data are interpolated by one dimension interpolation T E T T Y TCOS Two 3? ? Two The theoretical curves are compared and the corresponding curves are drawn. Make a function first Take 0, 0. 5, 1, . . . 9. 5, 10, take a value every 0. 5, and make a scatter plot. T E T T Y Two 3? ? Secondly, the scatter points are linear (linear), three degree polynomial (cubic) and spline interpolation respectively. T=0:0.5:10; Y=t. ”3. *exp (-2*t).*cos (t): Xl-0:. 25:10; Yl=interpl (T, y, xl, liner,); Plot (T, y, r* , xl, Yl, b ); Legend ( scatter point , linear interpolation ); Zero One Two Three Four Five Six Seven Eight Nine Ten -0. 1 -0. 08 -0. 06 -0. 04 -0. 02 Zero Zero point zero two Zero point zero six Zero point zero eight Scatter linear interpolation T=0:0. 5:10; Y=t. ”3. *exp (-2*t).*cos (t): X>0:. 25:10; Yl=interpl (T, y, xl, cubic ); Plot (T, y, r* , xl, Yl, b ); Legend ( scatter point , three polynomial interpolation ); Three Zero One Two Three Four Five Six Seven