Matlab与化工数值计算-第4讲插值、拟合与数值微分和积分(国外英语资料).doc

Matlab与化工数值计算-第4讲插值、拟合与数值微分和积分(国外英语资料) This article is contributed by hiwyj2009 Ppt documents may experience poor browsing on the WAP side. It is recommended that you first select TXT, or download the source file to the local view. Instructions on exercises The exercises 1, second, and the equation should be corrected as follows: X, 0.7, sin, x, 0.2, cos, y = 0? Students who have submitted answers need not be corrected Y 0.7, cos, x + 0.2, sin, y = 0 Scoring criteria for exercises - the answer is accurate, timely and submit the program readability, high efficiency, integrity of the process, has good effect of input and output - available refined language to describe the process of solving problems, difficulties and solving process, what you have learned or anything else you think of something Instructions on exercises Please login cecomputing@ to download courseware and exercises, password: MATLAB Fourth, interpolation, fitting and numerical differentiation and integration Department of software application, School of chemical engineering, 2006-10 Main points of this chapter Interpolation methods (interp, spline), fitting methods (polyfit, csaps), numerical differentiation (polyder, fnder), numerical integration (Quad, quadl, fnint) Interpolation and fitting, numerical differential and integral function in the calculation of the chemical form? Property data interpolation? Discrete experimental data points? Calculate the enthalpy and entropy of fluid state equation differential kinetic equation fitting method?? design isothermal piston flow reactor calculation calculation of micro reactor segregation? Interpolation profiles The mathematical problem of interpolation can be described as: the number of known n+1 pairs, {xi, f (XI)}, where I = 0,1... N, (Xi is different from each other, called a node), calculates the function g (XI) =f (Xi). When {xi, f (XI)} has considerable accuracy, but their functional relation is difficult to determine or difficult to compute, these