draw a plot-graph
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how can i draw a graph from this equation:F(n) = x2^3 − 3x1^2 + x3 ?
Can anyone explain?
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madhan ravi
le 18 Oct 2020
doc fimplicit3
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Walter Roberson
le 18 Oct 2020
This would be suitable if F(n) is some constant, such as if the equation is
Walter Roberson
le 18 Oct 2020
If F(n) is not a constant, then you have the problem that you have three independent variables and one dependent variable. That would require 4 dimensional plots.
The closest you can get to 4 dimensional plots is to use isosurface() or slice() .
For example:
Fn = @(x1, x2, x3) x1.^2 - 2*x2.^3 + 3*x3/5 + 4;
[X1, X2, X3] = meshgrid(linspace(-2,2,25));
Z = Fn(X1, X2, X3);
for level = -13:5:25; isosurface(X1, X2, X3, Z, level); end
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