代码搜索结果

/*输入一个圆的半径，求出它的面积*/ #include “stdio.h” #define PI 3.1415926 #define area(r) PI*r*r main() { float r,a; scanf(“%f”,&r); a=area(r); printf(“The area is %f”,a); }

%微积分例1:一元函数求导（diff,gradient) clear;close; x=-2*pi:0.1:2*pi; y=sin(x); dy=diff(y)./diff(x); plot(x,y,x(1:length(x)-1),dy); hold on; yx =gradient(y,x); plot(x,yx,'ro');

%S-function for continuous state equation function [sys,x0,str,ts]=s_function(t,x,u,flag) switch flag, %Initialization case 0, [sys,x0,str,ts]=mdlInitializeSizes; case 1, sys=mdlDer

function [sys,x0,str,ts] = spacemodel(t,x,u,flag) switch flag, case 0, [sys,x0,str,ts]=mdlInitializeSizes; case 1, sys=mdlDerivatives(t,x,u); case 3, sys=mdlOutputs(t,x,u); case

function [sys,x0,str,ts] = spacemodel(t,x,u,flag) switch flag, case 0, [sys,x0,str,ts]=mdlInitializeSizes; case 3, sys=mdlOutputs(t,x,u); case {2,4,9} sys=[]; otherwise erro

function [sys,x0,str,ts] = spacemodel(t,x,u,flag) switch flag, case 0, [sys,x0,str,ts]=mdlInitializeSizes; case 3, sys=mdlOutputs(t,x,u); case {2,4,9} sys=[]; otherwise erro

clear all; close all; L1=-pi/6; L2=pi/6; L=L2-L1; T=L*1/1000; x=L1:T:L2; figure(1); for i=1:1:3 gs=-[(x+pi/6-(i-1)*pi/6)/(pi/12)].^2; u=exp(gs); hold on; plot(x,u); end xlab

%Flight Simulator Servo System clear all; close all; J=2; b=0.5; kv=2; kp=15; kd=6; f1=(b+kd*kv); f2=J; F=1; A=1; t=[0:0.001:10]'; %Simulation time r=A*sin(2*pi*F*t); dr=2*pi

%S-function for continuous state equation function [sys,x0,str,ts]=s_function(t,x,u,flag) switch flag, %Initialization case 0, [sys,x0,str,ts]=mdlInitializeSizes; case 1, sys=mdlDer

function [sys,x0,str,ts] = spacemodel(t,x,u,flag) switch flag, case 0, [sys,x0,str,ts]=mdlInitializeSizes; case 1, sys=mdlDerivatives(t,x,u); case 3, sys=mdlOutputs(t,x,u); case