1.x+3 > 4 x/2 < 1 2.x-3(x-2) ≤ 41-2x/4 > 2-x3.2(x-1) ≥ 3x+1x/3 < x+1/44.3x+1>5x+41/3x≤ x-2/3

*-----------------------------------------------*| 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 || 关于极限1.lim((x^-1) + (x^-4))/((x^-2) - (x^-3)) x-> 正无穷2.lim ((e^x) - (e^-x))/((e^x) + (e^-x)) x-> 负无穷 1.(x^3-x^2-4x+1)/(x^2-3x+2)-(x^3-2x^2-9x+21)/（x^2-5x+6）+（x^2-3x+8）/（x^2-4x+3）2.{(x^2)/（x-y)}*{y/(x+y)}-{(x^4y)/(x^4-y^4)}÷{（x^2/x^2+y^2）^2} 1.【x-1分之x平方+3x+2】+【6分之2+x-x平方】-【10-x分之4-x平方】2.【x+1-1分之1-x】除以【x-x平方分之x-1】3.【x平方-4分之x平方-x-6】+【x+2分之x-3】这个结果再除以【x+1分之x-3】4.【x分之x-y】乘以 1.(x*2-3x+3)/(x*2-3x+2)-(x*2-5x+7)/(x*2-5x+6)-1/(x*2-4x+3)2.1/x(x+1)+2/(x+1)(x+3)+3/(x+3)(x+6) 3.已知：x*2-3x+1=0,求x*2+1/x*2. 1.x/x-y * y^2/x+y -x^4y/x^4-y^4÷ x^2/x^2+y^2 2.(x^2-4/x^2-x-6+ x+2/x-3)÷ x+1/x-33.(x+1-1/1-x)÷（x- x^2/x-1)4.x-1/x^2+3x+2/6/2+x-x^2-10-x/4-x^21111111111111111111111111111111 因式分解 1.x^6-y^6-2x^3+1 2.x^4+64 3.(x-3)(x-1)(x+2)(x+4)+24 4.(6x-1)(2x-1)(3x-1)(x-1)+x^2 已知x=2π+1.求(X-1)+(X-2)+(X-3)+(X-4)+(X-5)+(X-6)+(X-7)+(X-8)+(X-9)+(X-10) 1.(2x-1)(4x²+2x+1))2.（x-1)(x²+x) 待定系数法习题1.x^+6x-7 2.x^-3x+2 3.3x^+1-4x 4.-3-4x+4x^ 5.x^-1/3+1/6xx²-2x-32x²+12x+10x²-4x+3x²/4 +x-39x²-6x-8 如何解下列方程解下列方程 1. x/2x²-11x-21=x+7/x²-12x+35 2. x-4/x²+x-2=1/x-1+x-6/x²-4 3. 1/x+7=x+1/(2x-1)(x+7)+1/2x²-3x+1 如何解下列分式方程解下列方程 1.x/2x²-11x-21=x+7/x²-12x+35 2.x-4/x²+x-2=1/x-1+x-6/x²-4 3.1/x+7=x+1/(2x-1)(x+7)+1/2x²-3x+1 如何解下列方程解下列方程 1.x/2x²-11x-21=x+7/x²-12x+35 2.x-4/x²+x-2=1/x-1+x-6/x²-4 3.1/x+7=x+1/(2x-1)(x+7)+1/2x²-3x+1 如何解下列分式方程解下列方程 1.x/2x²-11x-21=x+7/x²-12x+35 2.x-4/x²+x-2=1/x-1+x-6/x²-4 3.1/x+7=x+1/(2x-1)(x+7)+1/2x²-3x+1 x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4 x^5-x^4+x^3-x^2+x-1 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 1.解方程：2X/2X-1+X/X-2=2 2.解方程：2/X*X-X+3/X*X-4X*X-1=0