|x-1|=4 x=5或-3 那么|5x|=10 x= 那
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+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),
如果x-1/5x=3/10,那么x+1/5x=()
若x^2+2x-1=0,那么5x^2+10x-3
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
如果3x*x-x=1那么9x*x*x*x+12x*x*x-3x*x-7x+2001等于多少
1x()+2x()+3x()+4x()+5x()+6x()+7x()+8x()加9x()+10x()=1980
1X?+2X?+3X?+4X?+5X?+6X?+7X?+8X?+9X?+10X?=1980求?是多少
f(x)=x²-5x+4,g(x+1)=f(x),那么g(x)=( )
f(x)=x平方-5x+4,g(x+1)=f(x)那么g(x)=?
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!)+.