∫（0-2）x^2/(2x-x^2）^1/2 dx我设x-1=sint,然后∫（-π/2-π/2）(1+sint)^2 dt,然后就不会了.

300字读后感 2篇 俄把格式说一下吧：《xxxx》（写题目）主要内容：x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x(写那篇文章的主要内容）思考分析：x x x （x）-2x·x-x-2x+1=0求x的值, 解九宫格题目（X为未知数）9 X 2 X 7 X 8 X XX X 4 X X 9 X 6 X1 3 X 5 X X X X 24 X X 8 5 X X 1 XX 8 9 4 X 1 6 7 XX 1 X X 3 6 X X 88 X X X X 2 X 3 6X 5 X 6 X X 9 X XX X 7 X 4 X 2 X 1 请问这道题咋做 ：（x）X (x+1) X (x+2) X (x+3) =360 先化简再求值（x-1/x-x-2/x+1）/（2x²-x/x²+2x+1）且x²-x-1 =0 (X-3分之x-1-x分之x-4)除以x的平方+3x分之（x+3)(x-2),其中（x-1）(x-2)=0 35道.符号^代表平方.读起来就是（X的平方）.1,x^-x-202,x^-9x+203,x^-9x-204,x^+9x+205,x^-18x+326,x^+14x-317,x^+18x+328,x^+14x-329,x^+19x+4810,x^+47x-4811,x^+13x-4812,x^+2x-4813,x^+26x+4814,x^-22x-4815,x^+17x+7216,x^+21x-10017,x^-x-7218,x （∫（0到x）t*e^t*sint dt）/x^6*e^x,求极限,x趋于0这样做对吗?=2x*x^2*e^(x^2)*sinx^2/6x^5*e^x+x^6*e^x=2x^5*e^(x^2)/e^x(6x^5+x^6)=2x^5{(e^(x^2)-1) +1}/{(e^x-1)+1}(6x^5+x^6)=2x^5(x^2+1)/(x+1)(6x^5+x^6)=2x^7+2x^5/7x^6+x^7+6x^5由于x趋于 f(x)=(x+1)ln(x+1)+m(x^2+2x) x>=0时,f（x） *-----------------------------------------------*| 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 因式分解（x+x）-（x+x-1）-2 （x+2)(x-2)+16 (x-1)(x-2)+3x（x+3）-4（x+2)(x-3)（x+2)(x-2)+16 (x-1)(x-2)+3x（x+3）-4（x+2)(x-3) (x-1)^3(x+1)（x-2）/(x+4) x(x+1)(x+2)(x+3)+1 (换元法） 计算 x(x+3)-(x-1)(x-2） 化简：x(2x+1)-x(x-3） f（x）=-x^2+2x（x>0） 0(x=0) x^2-2x(x