Lets say I have data like so...
A B C D E 50 100 125 175 225
I want to create a sparkline that will show the difference between each column
SPARKLINE( [B-A, C-B, D-C, E-D])
But, I don't want to make my spreadsheet have 2x the number of rows in order to calculate the intermediate result.
Is there a function that will take a range of cells and return an array after apply some math on the input range?
Edit: Solution proposed worked perfectly... Here's what it looks like when applied.