1.3:8=24:x 2.3/4:9/10=x:3/5 3.12.5/2.5=x:10

来源：学生作业帮编辑：神马作文网作业帮分类：数学作业时间：2024/11/18 17:08:06

1.3:8=24:x 2.3/4:9/10=x:3/5 3.12.5/2.5=x:10
3:8=24:x 3/4:9/10=x:3/5 12.5/2.5=x:10

1)3/8=24/x => x = 24*8/3 => x=64
2)(3/4)/(9/10) = x/(3/5) => x= (3*10)*3/(4*9)*5 => x= 1/2
3)5 = x/10 => x= 50

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), 1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550 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 x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? x-4/x-6+x-8/x-10=x-5/x-7+x-7/x-9 1.3:8=24:x 2.3/4:9/10=x:3/5 3.12.5/2.5=x:10 |X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10| 一道数学分式方程(x-4)/(x-3)-(x-6)/(x-5)=(x-8)/(x-7)-(x-10)/(x-9) (x+7/x+6)+ (x+9/+x+8)=(x+10/x+9)+(x+6/x+5) 1.x+9/x+8- x+10/x+9=x+6/x+5- x+7/x+6；