Given generating function $G(x)=\frac{3+78x}{1-3x-54x^2}$, find the corresponding sequence $\{a_n\}$ A: $\{a_n\}=7*(-9)^n+4*6^n$ B: $\{a_n\}=7*9^n-4*6^n$ C: $\{a_n\}=7*9^n-4*(-6)^n$ D: $\{a_n\}=7*(-9)^n-4*6^n$ E: $\{a_n\}=7*(-9)^n+4*(-6)^n$ F: $\{a_n\}=7*(-9)^n-4*(-6)^n$
Given generating function $G(x)=\frac{3+78x}{1-3x-54x^2}$, find the corresponding sequence $\{a_n\}$ A: $\{a_n\}=7*(-9)^n+4*6^n$ B: $\{a_n\}=7*9^n-4*6^n$ C: $\{a_n\}=7*9^n-4*(-6)^n$ D: $\{a_n\}=7*(-9)^n-4*6^n$ E: $\{a_n\}=7*(-9)^n+4*(-6)^n$ F: $\{a_n\}=7*(-9)^n-4*(-6)^n$
以下不属于条件求值的是()。 A: ${3>=8?true:false} B: ${6<9?true:false} C: ${6<9?6:9} D: ${6<9}
以下不属于条件求值的是()。 A: ${3>=8?true:false} B: ${6<9?true:false} C: ${6<9?6:9} D: ${6<9}
lesson 18 Directions: in this part, you are going to listen to five transmissions or short exchanges and choose the correct answer from four choices. A: 9 miles 6 o’clock 9000feet fast moving from left to right B: 9 miles 6 o’clock 9000feet crossing from right to left C: 6 miles 9 o’clock 9000feet fast moving from right to left D: 6 miles 9 o’clock 9000feet crossing from left to right
lesson 18 Directions: in this part, you are going to listen to five transmissions or short exchanges and choose the correct answer from four choices. A: 9 miles 6 o’clock 9000feet fast moving from left to right B: 9 miles 6 o’clock 9000feet crossing from right to left C: 6 miles 9 o’clock 9000feet fast moving from right to left D: 6 miles 9 o’clock 9000feet crossing from left to right
以下表达式的运行结果不是整数的是() A: 6//9 B: 6/9 C: 6**2 D: 6%9
以下表达式的运行结果不是整数的是() A: 6//9 B: 6/9 C: 6**2 D: 6%9
G=,o(a)=12,以下哪个k使得f:G→G,f(x)=x^k是同构?() A: 2 B: 5 C: 6 D: 9
G=,o(a)=12,以下哪个k使得f:G→G,f(x)=x^k是同构?() A: 2 B: 5 C: 6 D: 9
以下不属于条件求值的是()。 A: A${3>=8?true:false} B: B${6<9?true:false} C: C${6<9?6:9} D: D${6<9}
以下不属于条件求值的是()。 A: A${3>=8?true:false} B: B${6<9?true:false} C: C${6<9?6:9} D: D${6<9}
360÷6÷9的结果与下面哪道题不一样?( ) A: 360÷54 B: 360÷9÷6 C: 360÷6×9 D: 360÷(6×9)
360÷6÷9的结果与下面哪道题不一样?( ) A: 360÷54 B: 360÷9÷6 C: 360÷6×9 D: 360÷(6×9)
有以下程序段,单击Command1按钮后,屏幕上的输出结果是( )。 Private Sub Command1_Click() For i=6 To 9 Print Tab(i*i),i Next i End Sub A: 6 7 8 B: 9 C: 6 7 8 9 D: 6 7 E: 8 9 F: 6 G: 7 H: 8 I: 9
有以下程序段,单击Command1按钮后,屏幕上的输出结果是( )。 Private Sub Command1_Click() For i=6 To 9 Print Tab(i*i),i Next i End Sub A: 6 7 8 B: 9 C: 6 7 8 9 D: 6 7 E: 8 9 F: 6 G: 7 H: 8 I: 9
对(25,18,9,33,67,82,53,95,12,70)按关键码值递增的顺序进行排序,采取快速排序法并以25为关键码,则第一趟排序后的序列为( )。 A: 12, 18, 9, 25, 67, 82, 53, 95, 33, 70 B: 18, 9, 12, 25, 33, 67, 82, 53, 95, 70 C: 12, 9, 18, 25, 67, 82, 53, 95, 70, 33 D: 9, 12, 18, 25, 33, 82, 53, 95, 67, 70
对(25,18,9,33,67,82,53,95,12,70)按关键码值递增的顺序进行排序,采取快速排序法并以25为关键码,则第一趟排序后的序列为( )。 A: 12, 18, 9, 25, 67, 82, 53, 95, 33, 70 B: 18, 9, 12, 25, 33, 67, 82, 53, 95, 70 C: 12, 9, 18, 25, 67, 82, 53, 95, 70, 33 D: 9, 12, 18, 25, 33, 82, 53, 95, 67, 70
2q^9=q^3+q^6即2q^7=q+q^4
2q^9=q^3+q^6即2q^7=q+q^4