1/10(200-x)+19=1/3x
1/10(200-x)+19=1/3x
(X-X*20%-18-(X-X*20%-18)*10%=X*1/2-3(过程)
y=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10)的导数在x=1
设函数f(x)=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10),
计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
1)x+1/x=3,求x^10+x^5+1/x^5+1/x^10的值
3/x-1=4/x 6/x+1=x+5/x(x+1)
(x+1分之x+6)-(x^+3x+2分之3x^+10x+4)+(x+2分之2x+1)=0,解这个方程
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
[x(x+1)+x平方(x-1)]+(-3x)