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I am using function to calculate an expression.

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rihan jericho
rihan jericho 2018-1-29
评论： Jan 2018-1-31
for example, function y=g(x) y=5+x end This gets my job done when one argument is passed, for example g(5). But what i want to do is , when i put g(5, 'v'), i want it to execute a different formula instead y=5+x. On this occasion, i want it to execute y=5+x.^2 . How can i do this. Any idea please?
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Jan
Jan 2018-1-31
@rihan jericho, Md Epu, Joe Raihan: Please stop deleting your question, after you got an answer.

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采纳的回答

Birdman
Birdman 2018-1-29
function y=g(x,v)
if nargin==1
y=5+x;
elseif nargin==2
y=5+x.^2;
end
end
When you call from command line like
g(3)
it returns
8
but when you call like
g(3,'V')
it returns
14

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