2018-11-09 11:55:26 -0500 received badge ● Student (source) 2018-11-07 14:33:32 -0500 asked a question Defining functions over symbolic domains Is there a way to define a function that takes a value (say $x$) on the interval $[-L, L]$ and is zero everywhere else? I tried the following code but it doesn't work. It gives me an error. This is because piecewise only accepts real intervals. Is there an alternative way of defining this? I want to be able to integrate/differentiate such types of functions so my understanding is that I also cannot use def here. L = var('L', domain = 'positive') f = piecewise([((-oo, -L), 0), ([-L, L], x), ((L, oo), 0)])  2018-11-07 14:33:32 -0500 asked a question Defining a function over a symbolic domain Is there a way to define a function that takes a value (say $x$) on the interval $[-L, L]$ and is zero everywhere else? I tried this but it doesn't work. It gives me an error. L = var('L', domain = 'positive') f = piecewise([((-oo, -L), 0), ([-L, L], x), ((L, oo), 0)])  I want to be able to integrate/differentiate such types of functions so my understanding is that I cannot use def here.