I am using function to calculate an expression.

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?

[Jan]

@rihan jericho, Md Epu, Joe Raihan: Please stop deleting your question, after you got an answer.

Answer 1

[Birdman]

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