问题描述：
matlab分段函数绘图y=x,x∈(-10,1);y=x^2,x∈[1,4];y=2^x,x∈(4,10).
问题解答：
我来补答
x=-10:0.1:1;
y=x;
plot(x,y,'-g');
x=1:0.1:4;
y=x.^2;
hold on
plot(x,y,'-r');
x=4:0.1:10;
y=2.^x;
plot(x,y,'-b');
grid on
hold off
y=x;
plot(x,y,'-g');
x=1:0.1:4;
y=x.^2;
hold on
plot(x,y,'-r');
x=4:0.1:10;
y=2.^x;
plot(x,y,'-b');
grid on
hold off
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