This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

SM320F28335-EP: qsin函数qmath库的公式系数来源推导

Part Number: SM320F28335-EP

sin(x) = 3.1406625*x+0.02026367*x^2-5.325196*x^3+0.5446778*x^4 +1.800293*x^5,文档里面介绍到的sin泰勒展开的系数怎么来的呢?为什么有二次项和四次项呢?不是应该sin(x) = x - x^3 * 3!  + x^5 * 5!   不理解,望各位大神指教一下