...SDU 2.卷积计算方法 有三种方法可以得到两个函数的卷积: 几何方法(the graphical method) 直接积分(direct integration) 数值积分(numerical integration) 以下列的一维函数为例来说明: 2 ( ) 0 3 3 f x x x =< ≤ 1 ( ) rect( ) 4 x h x − = 3 2...
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... direct indecomposable 不可直接分解的 direct integral 直接积分 direct interpolation 直接插值法 ...
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利用有限元方法进行正演计算的效率要比直接积分方法至少高一个数量级。
The efficiency of forward calculation by finite element method is one order higher than that by immediate integration.
分析了不定积分的四种基本求解方法:直接积分、第一换元法、第二换元法、分部积分法。
There are four solutions of indefinite integration in paper: direct integration, the first exchangeable integration, the second exchange - able integration, parcel integration.
但这一偏微分方程不能直接积分,所以通常用纳维法、瑞利-里兹法、有限差分方法等方法求解。
But this partial differential equation can not be directly integral, so usually use Navier method, Rayleigh Ritz method and finite difference method and other methods.
du, it's an ideal gas. So this is Cv dT and of UB course we can just integrate this straight away.
因此这是CvdT,当然我们可以,直接算出这个积分,那么△
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