(-8/9)×(2 1/4-4 1/2-1 1/8)

1:8 2:9 1:9 3:4 1:3 ... 1+2+3+4、、、+8+9= 1+1+1+1/5+8/4+9/2 [2^4+1/4)(4^4+1/4)(6^4+1/4)(8^4+1/4)(10^4+1/4)】/[1^4+1/4)(3^4+1/4)(5^4+1/4)(7^4+1/4)(9^4+1/4)] (-8/9)×(2 1/4-4 1/2-1 1/8) 1*2/1+2*3/1+3*4/1+...+8*9/1+9*10/1简算 计算：(-2/1)+(3/1)+(-4/1)+(9/1)+(8/1)+(-9/4)=? (-1/2)+(1/3)+(-1/4)+(1/9)+(1/8)+(-4/9) = 1/1*2*3+1/2*3*4+1/3*4*5+.+1/8*9*10 找规律:1,2,4,4,9,8,16,16,(),() 找规律:2,1,4,4,8,9,16,( ) 1,-2,4,-4,9,-8找规律 1,2,4,4,9,8,( ),( ),25,32怎么填 1,2,4,4,9,8,（ ),( ),25,32,( ) *4**1**9*9*3***4*5*2*954*3**57***86**6*587*1**8**9**2*1**4*5**88*4***2*35**8*2**1 1+2+3+4-6+5-8+9-9= 线性代数题,计算行列式(1)|4 2 2 2||2 4 2 2| =|2 2 4 2||2 2 2 4|(2)|1 1 1 1 ||1 2 3 4 | =|1 4 9 16||1 8 27 64| 1+1+2+3+4+56+8+9+64