将单位圆|z|<1映射成单位圆|w|<1的分时线性映射且满足f(1/2)=0,f(-1)=1,则f(x)=2z-1/z-2。()
举一反三
- 把点z=1,i,-i分别映射成点w=1,0,-1的分式线性映射把单位圆|z|<1映射成什么?并求出这个映射.
- 若f(z)在圆|z|<R内解析,f(0)=0,|f(z)|≤M<+∞,则(1)|f(z)|≤;(2)若在圆内有一点z(0<|z|<R)使
- 调用下面函数,错误的是( )。def f(x, y = 0, z = 0): pass #空语句,定义空函数体 A: f(z = 3, x = 1, y = 2) B: f(1, x = 1, z = 3) C: f(1, y = 2, z = 3) D: f(1, z = 3)
- 执行下面代码,错误的是def f(x, y = 0, z = 0): pass # 空语句,定义空函数体 A: f(1, x = 1, z = 3) B: f(z = 3, x = 1, y = 2) C: f(1, z = 3) D: f(1, y = 2, z = 3)
- 设\(w = f(x + y + z,xyz)\),其中\(f\)有连续偏导数,则\( { { {\partial}w} \over {\partial {x}}} =\) A: \({f'_1} + yz{f'_2}\) B: \(x{f'_1} + yz{f'_2}\) C: \(yz{f'_1} +x{f'_2}\) D: \({f'_1} +{f'_2}\)