100-x=58.9
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1X+2X+3X…+98X+99X+100X=5050x=50500x=10
x^4+x^3+x^2+x+1=0,x^100+x^99+x^98+x^97+x^96=x^96(x^4+x^3+x^2+x+1)=x^96*0=0
因为x^4+x^3+x^2+x^2+1=0所以x^100+x^99+x^98+x^97+x^96=x^96(x^4+x^3+x^2+x^2+1)=x^96*0=0
x^100+X^99+X^98+X^97+X^96=x^96(x^4+X^3+X^2+X^1+1)=k^96*0=0
1/x(x+1)(x+2)+1/(x+1)(x+2)(x+3).+1/(x+98)(x+99)(x+100)=(1/2){[1/x(x+1)-1/(x+1)(x+2)]+[1/(x+1)(x+2)-1
1/X(X+1)+1/(x+1)(x+2)+.+1/(x+99)(x+100)=1/x-1/(x+1)+1/(x+1)-1/(x+2)+.+1/(x+99)-1/(x+100)=1/x-1/(x+10
=x+(3x-2x)+(5x-4x)+……+(101x-100x)=x+x+……+x=51x=51×2/51=2
2x+3x+4x+5x+x+6x+7x=10028x=100x=100/28x=25/7
x-2x+3x-4x+...+99x-100x=25(1-2)x+(3-4)x+…+(99-100)x=25-x-x-…-x=25-50x=25x=-1/2
(1)f(x)=x(x+1)(x+2)(x+3)......(x+100)lnf(x)=lnx+ln(x+1)+ln(x+2)+...+ln(x+100)[lnf(x)]'=f'(x)/f(x)=1/
条件值在A1,在B1单元格输入:=LOOKUP(A1,{0;3.5;5;7},{-200;0;100;100})X>7,x=1005
(X+X)+(X-X)+(X*X)+(X/X)=1002X+0+X*X+1=1002X+X*X=99X(X+2)=99X=9再问:请问X(X+2)=99解为什么就等于9了呢没看懂再答:换成算术法你就明
X+X+X+X+X+X+100X=1690106x=1690x=845/53
2x+4x+6x...+100x=1-(x+3x+5x+...+99x)x(2+4+6+...+100)=1-x(1+3+5+...99)x(2+4+6+...+100)+x(1+3+5+...+99
(x+x)+(x-x)+(xx)+(x/x)=1002x+0+x²+1=100x²+2x+1=100(x+1)²=10²x+1=10或x+1=-10x=9或x=
2x=100x=50再问:过程呢??再答:3x=x+100移项:3x-x=1002x=100x=100/2x=50这样可以了吧
x+x/3=1004x/3=1004x=300x=75x+3x=1004x=100x=25100-x=x*34x=100x=25x=(100-x)*3x=300-3x4x=300x=75x+y=100
3x=100+x3x-x=1002x=100x=50
若将f(x)展开,形式为x^101+……+100!xx=0,求导后带x的全为0,即x^2以上的全为0所以最后等于100的阶乘