Question

用matlab画图 要详细步骤和过程！！！

Answer 1

这两道题都不是很复杂，根据要求弄就完事了。

具体程序如下：

clear all

close all

%% 

theta = 0:pi/100:2*pi;

R = 3;

x = R*cos(theta);

y = R*sin(theta);

figure

plot(x,y,'b-.','LineWidth',2)

grid on

hold on

x1 = 0:pi/100:4*pi;

y1 = exp(-x1./4).*sin(4*x1);

plot(x1,y1,'g:','LineWidth',2)

title('题目1')

xlabel('x')

ylabel('y')

axis equal

%%

x = -4:0.01:4;

y = x.^2.*cos(x);

figure

plot(x,y,'b-.','LineWidth',2)

grid on 

hold on

x1 = 3:0.01:10;

y1 = 2*exp(1./(x1.^2)).*sin(x1);

plot(x1,y1,'r','LineWidth',2)

title('题目2')

xlabel('x')

ylabel('y')

axis equal

legend('y = x^2cosx','y = 2e^(^1^/^x^2^)sinx')

结果如图：