linear problems的用法和樣例：
例句
- Both methods result in tridiagonal systems of linear equations that can be solved efficiently.
兩種方法都形成了有效求解的三對角線(xiàn)的線(xiàn)性方程組。 - The numerical results of some test problems show that the two-grid methods are robust in solving regularized systems.
試驗問(wèn)題的數值結果表明，雙網(wǎng)格迭代方法求解正則化后的對稱(chēng)正定線(xiàn)性方程組效果很好。
