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Interactive Open Source Numerical Library of C/C++ functions for Engineering, Finance, Maths, Science and Statistics. With Online Calculators for Numerical Components and Excel Add-ins.
qtool在线工具为大家提供各种在线工具,实现分享了在线开发类,查询类,站长类,代码格式化与代码压缩处理,代码在线加密与解密,生活查询,图片在线批量处理,图片生成等内容丰富实用的工具.
GeoGebra - the world’s favorite, free math tools used by over 100 million students and teachers