When I need a calculator I usually turn to Google. As my math problems get more advanced, Google gets behind. It was reported MSN could do variables, but I don’t like MSN and it didn’t do a good job. So I found my match! Calcr is a ajax and web 2.0 website that is a calculator with advanced functions like: abs, sin, cos, tan, asin, acos, atan, exp, floor, log, max, min, pow, random, round, sqrt, and PI. It also shows you a history of your equations and is extremely fast.
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