plot of a function with multiple variables
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I am trying to plot a function which gives the sum of variables x and y.
clear all
syms x y
seriessum = @(n,x,y) symsum((x./y).^i,i,i,n)
while i>= 1
i = i + 1;
end
figure
fplot(seriessum)
When using fplot, it returns the error "input must be a function or functions of a single variable" and when using fplot3 it returns the the error "not enough input arguments."
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Chidvi Modala
2019 年 12 月 18 日
seriessum = @(n,x,y) symsum((x./y).^i,i,i,n) is equivalent to which is not a valid expression for a function which gives the sum of variables x and y. And fplot plots a function which contains single variable but the function you specified contains 3 variables. So it was throwing "input must be a function or functions of a single variable" error. fplot3 also doesn't work in this case because fplot3(funx,funy,funz) plots a parametric curve where funx, funy, funz are the functions of a single variable.
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