Question

用MATLAB编程画二维图,求程序!

Answer 1

clc;clear;close

n=1:-0.01:0;

r=0.5;

k=0.20826;t0=3.27216;y0=0.82581;

t1=t0;y1=-r*y0;t=t0+n*pi;

%t=[t,t+pi/4];

c1=1+k*sin(t1);c2=y1+k*cos(t1);

x=c1+c2*(t-t0)-k*sin(t);

y=c2-k*cos(t);

plot(x,y)

xlabel('Displacement')

ylabel('velocity')

axis([-1 1 -1 1])

上面那条曲线是不可能的,因为不管t为何值y=c2-k*cos(t)= -0.6194- 0.2083cos(t)<0的.怎么可能大于0呢