可以实现数值分析中的欧拉法、后退欧拉法和改进欧拉法的计算，程序中涉及到拉界面，以及许多控件的使用。,Numerical analysis can be achieved in the Euler, backward Euler and improved Euler s method of calculation, the procedure involved in drawing interface, as well as the use of many controls.

用QR分解来求矩阵的全部特征值 包括：QR分解，矩阵转置，；矩阵求逆，矩阵相乘，最后迭代得出特征值-With QR decomposition to the full matrix eigenvalue include: QR decomposition, matrix transpose, matrix inversion, matrix multiplication, and finally reached eigenvalue iteration