已有定义语句:int x=2,y=4,z=6;if(x>y) z=x;x=y;y=z;执行上述语句后x,y,z的值是____。 A: x=4,y=2,z=2 B: x=4,y=4,z=2 C: x=4,y=6,z=6 D: x=4,y=2,z=6
已有定义语句:int x=2,y=4,z=6;if(x>y) z=x;x=y;y=z;执行上述语句后x,y,z的值是____。 A: x=4,y=2,z=2 B: x=4,y=4,z=2 C: x=4,y=6,z=6 D: x=4,y=2,z=6
【简答题】设 z 1 =4 + 3i , z 2 =2 - 3i ,计算 z 1 · z 2
【简答题】设 z 1 =4 + 3i , z 2 =2 - 3i ,计算 z 1 · z 2
9. 已知函数$z=z(x,y)$由${{z}^{3}}-3xyz={{a}^{3}}$确定,则$\frac{{{\partial }^{2}}z}{\partial x\partial y}=$( ) A: $\frac{z({{z}^{4}}-2xy{{z}^{2}}-{{x}^{2}}{{y}^{2}})}{{{({{z}^{2}}-xy)}^{3}}}$ B: $\frac{z({{z}^{4}}-2xy{{z}^{2}}-xy)}{{{({{z}^{2}}-xy)}^{2}}}$ C: $\frac{z({{z}^{3}}-2xyz-{{x}^{2}}{{y}^{2}})}{{{({{z}^{2}}-xy)}^{3}}}$ D: $\frac{z({{z}^{3}}-2xy{{z}^{2}}-{{x}^{2}}y)}{{{({{z}^{2}}-xy)}^{3}}}$
9. 已知函数$z=z(x,y)$由${{z}^{3}}-3xyz={{a}^{3}}$确定,则$\frac{{{\partial }^{2}}z}{\partial x\partial y}=$( ) A: $\frac{z({{z}^{4}}-2xy{{z}^{2}}-{{x}^{2}}{{y}^{2}})}{{{({{z}^{2}}-xy)}^{3}}}$ B: $\frac{z({{z}^{4}}-2xy{{z}^{2}}-xy)}{{{({{z}^{2}}-xy)}^{2}}}$ C: $\frac{z({{z}^{3}}-2xyz-{{x}^{2}}{{y}^{2}})}{{{({{z}^{2}}-xy)}^{3}}}$ D: $\frac{z({{z}^{3}}-2xy{{z}^{2}}-{{x}^{2}}y)}{{{({{z}^{2}}-xy)}^{3}}}$
若int x=2,y=3,z=4 则表达式x<z?y:z的结果是() A: 4 B: 3 C: 2
若int x=2,y=3,z=4 则表达式x<z?y:z的结果是() A: 4 B: 3 C: 2
设A=,且A的特征值为1,2,3,则有() A: x=2,y=4,z=8 B: x=-1,y=4,z∈R C: x=-2,y=2,z∈R D: x=-1,y=4,z=3
设A=,且A的特征值为1,2,3,则有() A: x=2,y=4,z=8 B: x=-1,y=4,z∈R C: x=-2,y=2,z∈R D: x=-1,y=4,z=3
intx=4,y=4,z=2;x=y==z;则x的值()
intx=4,y=4,z=2;x=y==z;则x的值()
x=2,y=5,z=3 (x>y)+z*4=?
x=2,y=5,z=3 (x>y)+z*4=?
int x=3,y,z;<br/>y=-x++;<br/>z=y+8/++x;<br/>Console.WriteLine{{0},{1},{2}",x,y,z);<br/>此程序的输出结果是____。 A: 5,-3,-2 B: 4,-3,-1 C: 4,-4,-2 D: 5,-4,-2
int x=3,y,z;<br/>y=-x++;<br/>z=y+8/++x;<br/>Console.WriteLine{{0},{1},{2}",x,y,z);<br/>此程序的输出结果是____。 A: 5,-3,-2 B: 4,-3,-1 C: 4,-4,-2 D: 5,-4,-2
设z的初值是3,求下列表达式运算后的z值。(1)z+=z (2)z-=2(3)z*=2*6 (4)z/=z+z (5)z+=z-=z*=z
设z的初值是3,求下列表达式运算后的z值。(1)z+=z (2)z-=2(3)z*=2*6 (4)z/=z+z (5)z+=z-=z*=z
执行以下语句的结果:dict1={"x":1,"y":2,"z":3}dict2={"x":4,"a":5}dict1.update(dict2) A: {"x":1,"y":2,"z":3,"x":4,"a":5} B: {"x":4,"a":5,"x":1,"y":2,"z":3} C: 有重复项,结果有误! D: {"x":4,"y":2,"z":3,"a":5}
执行以下语句的结果:dict1={"x":1,"y":2,"z":3}dict2={"x":4,"a":5}dict1.update(dict2) A: {"x":1,"y":2,"z":3,"x":4,"a":5} B: {"x":4,"a":5,"x":1,"y":2,"z":3} C: 有重复项,结果有误! D: {"x":4,"y":2,"z":3,"a":5}