详解(xiánꞬjiě)导数及偏导数运算实验(shíyàn)目的：学习Matlab命令导数概念(gàiniàn)求一元函数的导数求多元函数的偏导数求高阶导数或高阶偏导数求隐函数所确定函数的导数与偏导数1.学习(xuéxí)Matlab命令Matlab求导命令(mìnglìng)diff调用格式：diff(函数(hánshù)f(x，y),变量名x,n)，/2.导数(dǎoshù)的概念例1.2).导数的几何意义是曲线(qūxiàn)的切线斜率取h=3,2,1,0.1,0.01，分别(fēnbié)作出几条割线.从图上看，随着M与P越来越接近(jiējìn)，割线PM越来越接近曲线的割线.3.求一元函数的导数(dǎoshù)a=[1/2/(x^2-2*x+5)^(1/2)*(2*x-2),-2*sin(x^2)*x-4*sin(2*x),4^sin(x)*cos(x)*log(4),1/x/log(x)]解：dy_dx=sin(t)/(1-cos(t))symsxyz;du_dx=diff((x^2+y^2+z^2)^(1/2),x)du_dy=diff((x^2+y^2+z^2)^(1/2),y)du_dz=diff((x^2+y^2+z^2)^(1/2),z)a=jacobian((x^2+y^2+z^2)^(1/2),[xy,z])du_dx=1/(x^2+y^2+z^2)^(1/2)*xdu_dy=1/(x^2+y^2+z^2)^(1/2)*ydu_dz=1/(x^2+y^2+z^2)^(1/2)*z解：symsxy;Jacobian([atan(y/x),x^y],[x,y])5.求高阶导数(dǎoshù)或高阶偏导数(dǎoshù)例116.求隐函数(hánshù)所确定函数(hánshù)的导数或偏导数例12例13输入(shūrù)命令：练习(liànxí)：//内容(nèiróng)总结