文档介绍：1 软件程序函数大全一、数学函数 1、科学函数 abs Returns absolute value of argument. putes inverse cosine. putes inverse sine. putes inverse tangent. putes angle given a point x,y. putes Bessel function, first kind. putes Bessel function, second kind. putes the Box-Cox function. putes cosine. putes hyperbolic cosine. putes a one-dimensional smoothing curve. putes the digamma function. putes the exponential function ofx. putes the floating-point remainder of x/y. putes gamma function value. putes the natural log of each element. putes natural log of factorial function. putes the log 10 of each element. putes modified and exponentially scaled modified Bessels of the first kind of the n th order. nextn, nextnevn Returns allowable matrix dimensions puting FFT ’ s. optn, optnevn Returns optimal matrix dimensions puting FFT ’ s. pi Returns . polar Graphs data using polar coordinates. putes sine. 2 putes the hyperbolic sine. putes a two-dimensional interpolatory spline. putes a smoothing spline for a curve. putes a smoothing spline for a surface. putes the square root of each element. putes tangent. putes hyperbolic tangent tocart Converts from polar to cartesian coordinates. topolar Converts from cartesian to polar coordinates. putes trigamma function. All trigonometric functions take or return values in radian units. 2、微分与积分函数 putes numerical gradient. putes numerical gradient with mask. putes first derivative ofa function. putes numerical Hessian. putes numerical Hessian using gradient procedure. putes numerical Hessian using gradient procedure with weights. putes numerical Hessian with mask. putes numerical Hessian with mask and weights. putes numerical Hessian with weights. putes second derivative ofa function. intgrat2 Integrates a 2-dimensional function over a user-defined region. intgrat3 Integrates a 3-dimensional function over a user-defined region. intquad1 Integrates a 1-dimensional function. intquad2 Integrates a 2-dimensional function over a user-defined rectangular regi