隐函数f(x,y)=0的求y'命令是-diff(f,x)/diff(f,y)
举一反三
- 根据方程F(x,y,z)=0求[img=20x44]1802e4e0282af80.png[/img],应使用命令 A: -diff(F,x)/diff(F,y) B: diff(F,x)/diff(F,y) C: -diff(F,y)/diff(F,x) D: diff(F,y)/diff(F,x)
- 实验命令“syms x y; f=x^3+y^3-3*x*y; fx=diff(f,'x'); fy=diff(f,'y'); [x0 y0]=solve(fx,fy)” 的结果是【】.
- 下面的命令表示( ) syms a x y f=sin(a*x)+y^2*cos(x); dfdx=diff(f);
- 输入Mathstudio命令。已知求隐函数的导数指令为idiff(f(x,y),y,x),求隐函数F(x,y)=y^2-y-x=0的导数dy/dx,求导命令为
- 设(),求y的4阶导数错误的命令是()A.()syms()f(x)()f(x)=exp(x)*cos(x)()diff(f,4)()B.()syms()f(x)()f(x)=exp(x)*cos(x)()diff(f,x,4)()C.()syms()f(x)()f(x)=exp(x)*cos(x)()diff(f,4,x)()D.()syms()f(x)()f(x)=exp(x)*cos(x)()diff(f,x)