①:50*(x+0.2)=60*(x-1) ②:50*(x-2+8)=(50+10)*(x-2-5)
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
5*(x-2)=4*(x+3) 2x+(50-x)*4=140 3x-(8-x)=20*4 200x=(x-0.5)*2
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
解方程①(x+3/x-1)²-5(x+3/x-1)+6=0 ②x²-2/x+3-6x+18/x
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),
解方程.(5x/x²+x-6)+(2x-5/x²-x-12)=7x-10/x²-6x+8
(2x-2)(x-1)=0 x(x-5)=5x-10
(x+12)(x-2)+(x+7)(x+8)-(x+5)(x-10),其中x=2
x-1)(X-2)(x-3)...(x-50)+x(x-2)(X-3)...(X-50)+...+x(x-1)(x-2)
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
解方程(x/x(x+2))+(x/(x+2)(x+4))+.+x/(x+8)(x+10)=1