I'm trying to find a good tool for teaching someone maths online. Some kind of a online whiteboard that the student can be invited to. I need to be able to draw graphs and handwrite using my drawing ...
I've been getting coupon offers from half a dozen of sites. Is it possible to use a formula like "If there is a number that is larger than 60, then remove". This means that all coupons which cost ...
I couldn't find it easily in their FAQ: When does your link karma increase 1 point? I don't think it's a one-one relationship with votes, as some of my stuff got upvoted and it didn't change ...
I have a column of numbers, where I've changed the background color of some of the cells to blue. All of the other cells in the column have the regular white background. Is it possible to create a ...
The google charts API supports creating good looking formulas based upon latex input: Does someone know an online chat service which makes use of that API to display discussed formulas? Maybe with ...
Is there any way I can check whether a cell is empty? There is a function ISBLANK() but it returns false when there's a formula in a cell even thought the formula doesn't return anything (or an empty ...