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Using a fucntion in loop

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Berkay
Berkay 2022-9-1
编辑： Torsten 2022-9-1
I defined this;
P = [1 -2 4]
I want to find nth derivative of this poly and I want to do it with while loop for example I try this;
a = 0;
n = 3;
while(a < n)
polyder(P)
a=a+1;
end
The result is
ans =
2 -2
ans =
2 -2
ans =
2 -2
Why does the program take derivative of the poly at first but it does not for the rest of it?

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采纳的回答

Torsten
Torsten 2022-9-1
编辑：Torsten 2022-9-1
Ran in:
P = [1 -2 4]
P = 1×3
1 -2 4
a = 0;
n = 3;
while(a < n)
P = polyder(P)
a = a + 1;
end
P = 1×2
2 -2
P = 2
P = 0

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