设A=x0,B=uv,C=3-4,若A+2B-C=0,求x,y,u,v的值
举一反三
- 【简答题】设 A = , B = (1) 计算 3 A - B , 2 A +3 B ; (2) 若 X 满足 A + X = B ,求 X ; (1) 若 Y 满足( 2 A - Y ) +2 ( B - Y ) =0 ,求 Y . (30.0分)
- 设[tex=21.214x2.786]YHIKtHtTy6YeetIBukGWJ/+4CPibC+H1hzFh9VOwgL0S9GN2pUoehfDbgBGc5EnrdWI+XuY+Ymu+pDcK9HiZ9yXnaA2Bu4G6/6u1St7CLSMx59I82bjv1bCI2gEnrsJNql1frne8KsMSeBQW1cNKcuTaRB/F+4LAgzRxiKyGrOQiHFMyz8xDbT+BEy6KACG1U8FMEJreyBo/QSwsxRx8RDhp3OZ7UFFTQRocd2V6R+rERHrZxrt9oGOmh+8uIFvx9eVIIoeiy4uSVcNteqe6RBKTF8FWle9nj+GzCitqy6E=[/tex]且A+2B-C=O，求x，y，u，v的值.
- 设[tex=21.214x2.786]YHIKtHtTy6YeetIBukGWJ/+4CPibC+H1hzFh9VOwgL0S9GN2pUoehfDbgBGc5EnrdWI+XuY+Ymu+pDcK9HiZ9yXnaA2Bu4G6/6u1St7CLSMx59I82bjv1bCI2gEnrsJNql1frne8KsMSeBQW1cNKcuTaRB/F+4LAgzRxiKyGrOQiHFMyz8xDbT+BEy6KACG1U8FMEJreyBo/QSwsxRx8RDhp3OZ7UFFTQRocd2V6R+rERHrZxrt9oGOmh+8uIFvx9eVIIoeiy4uSVcNteqe6RBKTF8FWle9nj+GzCitqy6E=[/tex]且A+2B-C=O，求x，y，u，v的值.
- 设f(x，y)与φ(x，y)均为可微函数，且φ'y(x，y)≠0．已知(x0，y0)是f(x，y)在约束条件φ(x，y)=0下的一个极值点，下列选项正确的是______． A: 若f'x(x0，y0)=0，则f'y(x0，y0)=0 B: 若f'x(x0，y0)=0，则f'y(x0，y0)≠0 C: 若f'x(x0，y0)≠0，则f'y(x0，y0)=0 D: 若f'x(x0，y0)≠0，则f'y(x0，y0)≠0
- 设a=3,b=4,c=5.求逻辑表达式!(x=a)&&(y=b)&&0的值______。