1,2,5,14,41( ) A,121 B,122 C,123 D,144
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1,2,5,14,41()A,121B,122C,123D,1441,2,5,14,41()A,121B,122C,123D,1441,2,5,14,41()A,121B,122C,123D,144B
1,2,5,14,41( ) A,121 B,122 C,123 D,144
1,2,5,14,41( ) A,121 B,122 C,123 D,144
1,2,5,14,41( ) A,121 B,122 C,123 D,144
B,2=1+(3的0次)
5=2+(3的1次)
14=5+(3的2次)
41=14+(3的3次)
122=41+(33的4次)
B
a+a+1+a+2+a+3+a+4+a+5+a+6+a+7.+a+2013+a+2014=?
a=-1 求a-2a+3a-4a+5a-6a+...+99a-100a
逻辑运算中A表示什么 (1) 0 · A = 0 (10) 1' = 0; 0' = 1 (2) 1 · A = A (11) 1 + A = 1 (3) A · A = A (12) 0 + A = A (4) A · A' = 0 (13) A + A = A (5) A · B = B · A (14) A + A' = 1 (6) A·(B·C) = (A·B)·C (15) A
逻辑运算中的A表示什么 (1) 0 · A = 0 (10) 1' = 0; 0' = 1 (2) 1 · A = A (11) 1 + A = 1 (3) A · A = A (12) 0 + A = A (4) A · A' = 0 (13) A + A = A (5) A · B = B · A (14) A + A' = 1 (6) A·(B·C) = (A·B)·C (15
化简 3a-[5a-(a+2)+a]-1
2a*a+3a+2/a+1-a*a-a-5/a+2-3a*a-4a-5/a-2+2a*a-8a+5/a-3
1=5a,2=8a,3=11a,4=14a,n=?a
a>0 求a+a^3+a^5+...+a^(2n-1)a>0 求a+a^3+a^5+...+a^(2n-1)a>0 求a+a^3+a^5+...+a^(2n-1)a>0 求a+a^3+a^5+...+a^(2n-1)a>0 求a+a^3+a^5+...+a^(2n-1)a>0 求a+a^3+a^5+...+a^(2n-1)a>0 求a+a^3+a^5+...+a^(2n-1)a>0 求a+a^3+a^5+...+a^(2n-1)a>0 求a+a^3+a^5+.
化简后,求值:a×2a×3a×4a×5a×(a+2a+3a+4a+5a),其中a³=1/3
a+a^2+a^3+a^4+a^5+a^6...+a^n=a^n+1-a/a-1 (a-1)≠0
化简:a(a*a-1)+2a*a(a+1)-3a(2a-5)拜托了各位
因式分解:a+2/a+1-a+3/a+2-a-4/a-36+a-5/a-4
[(2a-1)(2a+1)+(a+2)(a-2)-4a^2](a^2+5)
[(2a-1)(2a+1)+(a+2)(a-2)-4a^2](a^2+5)
当a=1时,a-2a+3a-4a+5a…+99a-100a=
a^2-1/a^2-2a +4a-5/2a-2a^2
化简(a-5)(a+1)/a^2-5a÷(a^2+a)
a²-1/a²-2a + 4a-5/2a-a²=