• 2021-04-14
    设z=f(x,v) ,v=v(x,y) ,其中f,v具有一阶连续偏导数,则(      )。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/64ca8940dd6e4835901f2da3b85b7607.png
  • http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/ace9444b5df3444b9d46f0dc472b7e60.png

    内容

    • 0

      下列程序的输出结果是( ) void f(int v,int w) { int t; t=v;v=w;w=t; } int main() { int x=1,y=3;z=2; if(x>y) f(x,y); else if(y>z) f(y,z); else f(x,z); printf(“%d,%d,%d\n”,x,y,z); }

    • 1

      图像f(x,y)的离散fourier变换为F(u,v),则其Fourier频谱是 A: F(u,v) B: |F(u,v)| C: |F(u,v)|.^2 D: f(x,y)

    • 2

      设f(u,v)是二元可微函数,z=f(y/x,x/y),则x∂z/∂x-y∂z/∂y=____。

    • 3

      设 有连续的偏导数, 且 ,则 =( )。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/63eb2ad0bac447489cbf8cbb923d3692.png

    • 4

      设f(x)连续函数,则=( )。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/d61df8d810544f27ada3ecb86c2d853a.png