matlab参数方程请问如何用matlab画x=cos（X）^3 y=sin(x)^3的图像,

clear all
close all
clc
t=0:pi/10000:2*pi;
x=cos(t)。^3;
y=sin(t)。^3;
figure
plot(t,x,'g',t,y,'r')
hold on
figure
plot(x,y)
hold on