How to write an 'if' script that changes a function depending on x?

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Luqas Lundahl
Luqas Lundahl le 11 Mar 2022
Commenté : Luqas Lundahl le 11 Mar 2022
Hello!
I am trying to write a script that changes a function depending on the value of x.
sin(x) if x<=3
arctan(x) if 3<x<=7
e^-x if x<7
trying to only use 1 if statement!
function y=funk(x)
if
x <= 3;
y=sin(x);
else
(3<x) && (x>=7);
y=atan(x);
else
x>7;
y=e^(-x)
end
I'm not sure if i made a syntax error or the code is just plain wrong... Any help is appriciated!

Réponses (2)

Johan
Johan le 11 Mar 2022
you need to use elseif for secondary condition in your if statement:
function y=funk(x)
if
x <= 3;
y=sin(x);
elseif
(3<x) && (x>=7);
y=atan(x);
else
x>7;
y=e^(-x)
end
  1 commentaire
Luqas Lundahl
Luqas Lundahl le 11 Mar 2022
would i need to use else if on the second else as well?

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Torsten
Torsten le 11 Mar 2022
Modifié(e) : Torsten le 11 Mar 2022
function y = funk(x)
if x <= 3
y = sin(x);
elseif (x > 3) && (x <= 7)
y = atan(x);
else
y = exp(-x);
end
end

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R2021b

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