求1-（x-1)+(x-1)^2-(x-3)^3+(x-4)^4+.+(x-1)^20的展开式中x^3项的系数答案是-5985

线性代数求行列式 |1 2 x 1| |x 1 x x| |x x 1 x| |x x x 1|线性代数求行列式|1 2 x 1||x 1 x x| |x x 1 x||x x x 1| 已知x*x+x-1=0求x*x*x-2x+2010的值 已知x*x+x-1=0 求x*x*x-2x+11=? x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x 求一个数独答案X X X 9 X X X 8 2 X 6 3 X X 1 4 X 99 X 8 X X X X X XX X X 6 7 X 3 X XX 4 6 X 5 X 2 9 XX X 7 X 2 3 X X XX X X X X X 7 X 17 X 4 3 X X 6 2 X6 3 X X X 7 X X X 一个“整式的乘法”的问题请先阅读下列解题过程,再仿做下面的问题.已知X*X + X - 1=0,求X*X*X + 2*X*X + 3的值.解X*X*X + 2X*X +3=X*X*X +X*X -X +X*X +X +3=X{X*X +X -1} +X*X +X -1 +4=0+0+4=4+ x + X*X + X*X*X=0.+ X*X + X*X*X |x^2-4x+3|+|x+1|>8 求x 求x/(x+1)(x+2)(x+3)的不定积分 (x-2)(x-4)-(x-1)(x-5)求过程 求x/(x-1)(x-2)(x-3)积分 *-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X || 填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x (x+1)(x-1)+2x(x+2)=3(x的平方+1),求X. 设2f(x)+xf(1/x)=(x+2x)/(x+1),求f(x). 已知x*x-3x+1=0求√(x*x+1/x-2)=? f(x)+f((x-1)/x)=2x; x!=0,1; 求f(x) f(x)=(x^2-2x-1)/x (x>0)求f(x)最小值 已知x+1/x=2,求(x^2008+ x^-2008 -2)/(x^2009 +x^-2009)