How to set Assumptions for function handle?

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Niklas Kurz
Niklas Kurz 2021-5-19
回答： Stephan 2021-5-19
easy case:
I'v gut a function handle:
f = @(x,y,z)x.^2+y.^2+z.^2-1;
fimplicit3(f)
for plotting an implicit function. Now I also want to assume z > 0
What's the deal?

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Stephan
Stephan 2021-5-19
Ran in:
See fimplicit3 example here and use interval argument:
f = @(x,y,z)x.^2+y.^2+z.^2-1;
fimplicit3(f, [-1, 1, -1, 1, 0, 1])

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