How to make a function file that displays a polynomial and accepts a specific command?

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loukas
loukas 2022-4-15
回答： Rik 2022-4-15
function lou(a,b,c)
fprintf('%dx^2 + %dx + %d =0 \n',a,b,c)
end
this is my code right now. how do i modify my code to make the command lou([a b c]) work?

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采纳的回答

Rik
Rik 2022-4-15
Why do you want to call your function like that? lou(a, b, c) will already work.
Anyway:
function lou(a,b,c)
if nargin==1,c=a(3);b=a(2);a=a(1);end
fprintf('%dx^2 + %dx + %d =0 \n',a,b,c)
end

更多回答（1 个）

KSSV
KSSV 2022-4-15
Ran in:
val = lou(1,2,3,.2)
1x^2 + 2x + 3 =0
val = 3.4400
function val = lou(a,b,c,x)
fprintf('%dx^2 + %dx + %d =0 \n',a,b,c)
val = a*x^2+b*x+c ;
end

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