Example, if I’m trying to find the limit x approaching 2 of f(x) and I have the following equation:
(imagine the two curly brackets are just one big stretched one that holds everything)
f(x)= {2x+1 considering x<2
{x^2 considering x>2
How would I go about entering this in? This would be really helpful.
Use Piecewise. The documentation center has examples and sample code.
You can also use
f[x_] := Which[x < 2, 2 x + 1, x > 2, x^2]
although this leaves f[2] undefined
Can you elaborate? Your formula looks alot better than the messy piecewise code. I’d like to use it!
What do you mean by the _ in f[x_]? and when I write it out do I also write “:= Which”
What would be another random example (doesn’t have to be a real equation) for say a piecewise function with THREE different functions?
x_ means that x is an undetermined variable. You need to look at the Mathematica documentation