0.5x=0.75(1000-x)
(X+X)+(X-X)+(X*X)+(X/X)=100
4X+0.5X=13.5X
x+0.5x=30
X/(X+1000)=5%
先化简再求值先化简再求值:(x-x/x+1)(x+1/x^2+4x+4)(x^2-4/x^2-2x),其中x=-0.5
0.5x=x-0.75(怎么算?)
60(x-0.5)=45(x+0.75)怎么算
x+x=x+15
10x-3.14*x*x*0.25=3.14*x*x*0.75 怎么算
6X-(360X-0.5X)=2×(360X-0.5X)
(X-4)(x-2)-2(X-1)(X+3)其中X=-0.5
用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+.