odd and even functions
11 views (last 30 days)
Show older comments
given this function is there a way in matlab with which i can know is its odd, even or neither?
0 Comments
Accepted Answer
Voss
on 6 May 2022
One thing you can do is to plot the function and visually inspect it:
f = @(x)0.5*(sin(x)+abs(sin(x)));
fplot(f,[-pi pi])
It doesn't look even or odd.
You could also evaluate the function at some values of x and -x and compare the results:
x = -pi:0.1:pi;
is_even = isequal(f(x),f(-x))
is_odd = isequal(f(x),-f(-x))
(A sanity check with functions known to be odd or even)
f = @(x)sin(x);
is_even = isequal(f(x),f(-x))
is_odd = isequal(f(x),-f(-x))
f = @(x)cos(x);
is_even = isequal(f(x),f(-x))
is_odd = isequal(f(x),-f(-x))
5 Comments
More Answers (1)
David Hill
on 6 May 2022
x=-pi:.001:pi;
f=@(x).5*(sin(x)+abs(sin(x)));
if isequal(f(x),f(-x))
even_odd=2;%even
elseif isequal(-f(x),f(-x))
even_odd=1;%odd
else
even_odd=0;%neither
end
See Also
Categories
Find more on Language Fundamentals in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!