三个自定义函数 对这其中两个函数的差值比求值并作图。

三个自定义函数profit3,profit22和profit已经写好了,但是作图的时候,我希望的是可以出一组图,但最后运行的结果只是出现了gap1 和gap2的两个值。
Xi = 5:5:100
profit3 = calucate_profit3(Xi)
profit2 = calucate_profit2(Xi)
profit = calucate_profit(Xi)
gap1 = (profit3-profit)/profit
gap2 = (profit2-profit)/profit
plot(Xi,gap1,'--',Xi,gap2,'-')

 Accepted Answer

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先确定你的函数能针对输入向量Xi求得输出向量profit
然后在gap1 = (profit3-profit)/profit
这种地方改成点除gap1 = (profit3-profit)./profit

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