已知函数f(x)=ax3+bsinx+5,且f(7)=9,则f(-7)=___.
已知函数f(x)=ax3+bsinx+5,且f(7)=9,则f(-7)=___.
某年的名义利率为 18%,通胀率达 11%,实际利率应为 A: 7% B: 29% C: 14.5% D: 9%
某年的名义利率为 18%,通胀率达 11%,实际利率应为 A: 7% B: 29% C: 14.5% D: 9%
In the current national standard of Hongmu, the range of mahogany listed includes: A: 33 species, 8 classes, 5 genera. B: 29 species, 7 classes, 5 genera. C: 29 species, 8 classes, 5 genera. D: 29 species, 9 classes, 5 genera.
In the current national standard of Hongmu, the range of mahogany listed includes: A: 33 species, 8 classes, 5 genera. B: 29 species, 7 classes, 5 genera. C: 29 species, 8 classes, 5 genera. D: 29 species, 9 classes, 5 genera.
(1)5 7 9 11() () ()()(2)26 23 20 17()() 8()(3)1 2 4 7 11() () 29(4)7 3 8 3 9 3()()(5)1 1 2 3 5 8()()
(1)5 7 9 11() () ()()(2)26 23 20 17()() 8()(3)1 2 4 7 11() () 29(4)7 3 8 3 9 3()()(5)1 1 2 3 5 8()()
29、9)_______
29、9)_______
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: $\{a_n\}=7*(-9)^n-4*(-6)^n$
已知f(4)=2,f(9)=3,用线性插值可得f (7)=( ) A: 2.6 B: 3 C: 3.1 D: 1.8
已知f(4)=2,f(9)=3,用线性插值可得f (7)=( ) A: 2.6 B: 3 C: 3.1 D: 1.8
M M 5 8 e ※???※() A: 田 田7 h 9 @ @ B: F f 3 2 g 红 ¥ ○ ¥ 红 C: D D 6 9 w ? + # # ? D: ∧ V 6 7 s ※ ? ? ? ※
M M 5 8 e ※???※() A: 田 田7 h 9 @ @ B: F f 3 2 g 红 ¥ ○ ¥ 红 C: D D 6 9 w ? + # # ? D: ∧ V 6 7 s ※ ? ? ? ※
估算7×29时,把29看成______,再算______×______,则7×29≈______.
估算7×29时,把29看成______,再算______×______,则7×29≈______.
给病人吸氧的浓度多少为宜?() A: 19% B: 29% C: 9% D: 69% E: 70% F: 39% G: 85%
给病人吸氧的浓度多少为宜?() A: 19% B: 29% C: 9% D: 69% E: 70% F: 39% G: 85%