Using barycentric Lagrange interpolation to approximate unknown function, the explicit formulations of element of differentiation matrix are constructed.

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The numerical examples of linear and nonlinear vibration demonstrate that barycentric Lagrange interpolation collocation method have advantages of simple formulations, easier to program and higher computational accuracy.

線性和非線性振動問題的數(shù)值算例表明免费Av青草网站，重心Lagrange插值配點法具有公式簡單、數(shù)值實施方便和計算精度高的優(yōu)點欧美黄色美女性爱视频网址。

For the beam buckling problem, this paper presents the Barycentric Lagrange interpolation collocation method to get the differentiation Matrix of unknown function.

采用重心Lagrange插值多項式建立未知函數(shù)的微分矩陣一级a在线看片，采用配點法將梁的控制方程表示為代數(shù)方程組。

Differential matrices are obtained on the element in accordance with continuous intervals of discontinuous boundary value problem to divide the computing elements and approximating unknown function on the element in term of barycentric Lagrange interpolation.

按照間斷邊值問題的連續(xù)區(qū)間劃分計算單元亚州黄色视频免费，在每一個單元上采用重心Lagrange插值近似未知函數(shù)日本黄色片A三级三级三级，得到每一個單元上的微分矩陣。

The linear vibration problems under periodic exciting force and general exciting force are numerical analysis by barycentric Lagrange interpolation collocation method.

利用重心Lagrange插值配點法分析了周期激勵和一般激勵下線性振動問題亚洲综合色色。

Obtaining the displacement of vibration, the velocity and acceleration are directly computed by differentiation matrices. The period of nonlinear vibration is computed by barycentric Lagrange interpolation collocation method.

計算得到振動位移后狼友视频新网址，采用微分矩陣和重心Lagrange插值計算非線性振動的速度、加速度和振動周期黄色视频大全一区。

Barycentric rational interpolation collocation method ; rectangular plates ; free vibrations ; differential equation

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By cubic s pline interpolation and search, the optimum combination was discovered. It was as follows: pH6.51, temperature26.6, time13.8d, quantity of beef extract 2 - 2.5%, the inoculation quantity 21.5%,inorganic salt 0.152%.

對插值所得的結(jié)果www.麻豆精品，通過計算機(jī)搜索得到多糖產(chǎn)量達(dá)最大值時的組合為：pH值為6.51黄色AV在、溫度為26.6℃、培養(yǎng)時間為13.8d自拍偷拍欧美、牛肉膏用量為2～2.5％免费毛片视频单身、接種量21.5％和無機(jī)鹽濃度0.152％。

By cubic spline interpolation and search, the optimum combination was discovered. It was as follows: pH6.51, temperature26.6, time13.8d, quantity of beef extract 2 - 2.5%, the inoculation quantity 21.5%,inorganic salt 0.152%.

對插值所得的結(jié)果欧美系列黄片黑人黑屌，通過計算機(jī)搜索得到多糖產(chǎn)量達(dá)最大值時的組合為：pH值為6.51久久精品国产一区二区三区、溫度為26.6℃、培養(yǎng)時間為13.8d国内外激情视频网、牛肉膏用量為2～2.5％一级大片黄、接種量21.5％和無機(jī)鹽濃度0.152％。

The method based on the frequency sampling is taken from the interpolation theory. The method based on the Chebyshev best uniform approximation theory can control the precision of approximation by limiting parameters.

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