7道数学填空若(1/4)^x=4√2,则x=若(2/5)^(3x-1)=(5/2)^(x-3)则x=10^m=2,10^

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/05/10 15:28:31

7道数学填空
若(1/4)^x=4√2,则x=
若(2/5)^(3x-1)=(5/2)^(x-3)则x=
10^m=2,10^n=3,则10^(-2m)-10^(-n)=
√六又四分之一-^3√三又八分之三-^3√0.125=
sina=√2/2且a∈(2π,3π)则a=
cosa=√3/2且a∈(-π,π)则a=
tana=√3且a∈(-π,π)则a

-5/4
1
-1/12
第四个没看明白
2π+π/4,2π+3π/4
π/6,-π/6
π/3,-2π/3

初一数学填空3个-10m^2n+5m^4n-15m^3n^2=若x^2+mx-4=(x-4)(x+1)则m=2x+y=3 若2x-3y+4=0则x（x*x-1)+x(5-x*x)-6y+7 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 x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x 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?是多少已知1+x+x^2+x^3=0,求x+x^2+x^3+x^4+x^5+x^6+x^7+x^8的值若x^3+x^2+x+1=0,求代数式1+x+x^2+x^3+x^4+x^5+...+x^2006+x^2007的值 x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? （1） x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8