how to write a function for the following task

Dear all:
  I am a newbie of gnumeric. I want to performe the following task.
  I have two columns A and B, and I want to compute sum((A(i)-B(i))/A(i)).
I can't find a function to perform this.
  Thank you for your help.


[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]