用matble画x = exp(-2*t)*sin(t)*heaviside(t);
时间: 2024-01-22 19:21:34 浏览: 70
可以使用Matlab的符号计算工具箱来绘制这个函数。下面是一个示例代码:
```
syms t;
x = exp(-2*t)*sin(t)*heaviside(t);
fplot(x,[-5,5]);
xlabel('t');
ylabel('x');
title('Plot of x = exp(-2*t)*sin(t)*heaviside(t)');
```
这将绘制在t范围为[-5,5]的图形,其中x轴是t,y轴是x,标题为“x = exp(-2*t)*sin(t)*heaviside(t)”。
相关问题
用matble画y = cos(pi*t).*(heaviside(t)-heaviside(t-1))
可以使用以下代码在Matlab中画出y = cos(pi*t).*(heaviside(t)-heaviside(t-1))的图像:
```matlab
t = -2:0.001:3; % 定义时间变量t
y = cos(pi*t).*(heaviside(t)-heaviside(t-1)); % 计算函数值
plot(t, y); % 画图
xlabel('时间 t'); % 设置x轴标签
ylabel('函数值 y'); % 设置y轴标签
title('y = cos(\pi t)*(u(t)-u(t-1))'); % 设置图像标题
```
其中,heaviside是Matlab自带的阶跃函数,表示在t=0时函数值从0突变到1。上述代码中,定义了时间变量t的取值范围为-2到3,步长为0.001,这样可以保证图像的平滑度。通过计算并绘制函数y的图像,可以得到如下结果:

用matble画y = n.*(stepfun(n,0)-stepfun(n,6))
你可以使用以下代码在MATLAB中绘制y = n.*(stepfun(n,0)-stepfun(n,6))的图像:
```
n = -10:10; % 定义n的取值范围
y = n.*(stepfun(n,0)-stepfun(n,6)); % 计算y的值
stem(n,y); % 绘制离散图
xlabel('n'); % 设置x轴标签
ylabel('y'); % 设置y轴标签
title('y = n.*(stepfun(n,0)-stepfun(n,6))'); % 设置图像标题
```
运行上述代码后,将会得到以下图像:

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