(8x-50)÷3=(10x+40)÷5+10
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),
(8x-50)÷3=(10x+40)÷5+10
{3×(x+10)+50}÷8=(5x-40)÷10
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
1. x+0.5x=6 4x+16=40 x/5=32% x-4/9x=10/21 x-1/8x=5/8 7x÷2=2.
10+x=3、x-2=-5、-9x=36、x÷4=7、12-x=8、(-40)÷x=8,怎么计算?请说明基本原理及其公式
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
几道简单的计算题①(-x)^3·x·(-x)^4÷x^5②(x^3)^4+x^10·x^2+x·x^3·x^8③(16x
3^x=2^x,求x.5^(x-1)·10^3x=8^x求x