求∫{√（x^4-x^-4+2)}/x^3dx

求|x-2|+|x-4| F(x)=∫(x^3,x^2)dt/(√1+t^4),求dF(x) 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 求lim(x->∞):[√(4x^2+x-1)+x+1]/[√(x^2+sinx)] x^2+√(2x^2-x-4)=1/2*(x+7) 求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 求∫x-3/x²-2x+2 dx,∫x³/√（4-x²）dx |x^2-4x+3|+|x+1|>8 求x (x-2)(x-4)-(x-1)(x-5)求过程 (2x+x+x/1.5)*4=110求x 求不定积分∫ xdx/√(2X^2-4x) 求不定积分∫x^2/√(4-x^2) dxRT ∫x^2√(1+x^4)dx 求不定积分! 求不定积分∫x/(√4-9x^2)dx 已知x=√2+1,求(x²+x-6)/(3-x)×(2x-6)/(x²-4x+4)÷(x+3)求快速回答啊 *-----------------------------------------------*| 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 || 已知x^-x-1=0,求x^4+x^3-x^2-4x+3