Question

用matlab怎么画y1=cos[0.5+((3sinx)/(1+x^2))]的图像

把x=0~2*pi间分为101点，画出以x为横坐标，y为纵坐标的曲线

Answer 1

clc;
clear;
x=0:pi/50:2*pi;
y=cos(0.5+((3.*sin(x))./(1+x.^2)))
xlabel('x');
ylabel('y');
plot(x,y,'r*');

这样就行了。。

Answer 2

syms y1 x;
ft=cos(0.5+(3*sin(x))/(1+x^2));
ezplot(ft,[0,2*pi]),grid on;
xlabel('x');ylabel('y1');

Answer 3

syms y1 x;
t=0:0.06:6.28;
ft=cos(0.5+(3*sin(x))/(1+x^2));
ezplot(t,ft,'r*'),grid on;
xlabel('x');ylabel('y1');