Geek Calculator

Features:

• Fast: Instant response, calculates and displays results as you type.Prompt error messages to help you correct it if you made some;
• Free: You only need to focus on your typing with mathematics expressions, the answers will be shown next to them automatically;
• Step by step: You can show others your problem solving process step by step via list the expressions you used line by line;
• Convert decimal to fraction and vice versa Quick convertions between fractions and decimals, and let you convert the repeating decimals to the corresponding fraction representation.
• Share: You can save or share your problem solving process easily by clicking "Get link".

Examples:

• Basic example
• You Choose! Small change can make a big difference, which change would you choose?
• Convert decimal to fraction Convert the decimal to its fraction representation, you can even convert a repeating decimal to its fraction! Want to know how does it do it? Read this blog where the detail algorithm was discussed: The algorithm of converting a decimal to its equivalent fraction representation.
• 求导数 灵感来自 SICP 习题 2.58

Tutorial:

I haven't got time to write it yet. But it is really so simple, and you can learn to use it by looking at the examples. And then you can share your experiences to the world by publishing your usage or your problem solving steps' links to your blog, twitter, and so on. Others will get inspires from you.

About Infinite

A History of Mathematics