绘制在Matlab中不同域上表现不同的函数 [英] Plotting a function which behaves differently over different domains in Matlab

问题描述

如果我有一个定义为

f(x) = x^2; x>0 & x<=1
     = x^3; x>1 & x<2
     = 2*x; elsewhere

如何在Matlab中的同一张图中绘制它?

How do I plot this in Matlab in the same graph?

推荐答案

我会在没有fplot的情况下执行此操作:

I would do this without fplot :

x = 0:0.1:3;
x1 = x(x>0 & x<=1);
x2 = x(x>1 & x<2);
x3 = x(x>2);
y1 = (x1).^2;
y2 = (x2).^3;
y3 = 2*(x3);
plot([x1 x2 x3], [y1 y2 y3])

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