How to plot a trinomial graph

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Owen Fernandez
Owen Fernandez 2021-2-22
编辑： Are Mjaavatten 2021-2-22
Im having trouble plotting a trinomial graph, for the function y = x^3. I wrote out the function and tried the plot command but it wont work really.

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回答（1 个）

Are Mjaavatten
Are Mjaavatten 2021-2-22
编辑：Are Mjaavatten 2021-2-22
fun = @(x) x^3;
fplot(fun,[-3,3])
Alternatively:
x = linspace(-3,3);
plot(x,x.^3); % Note the use of .^, for element by element operation as opposed to matrix operation
Please type
doc fplot
doc linspace
doc plot
for more details.

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