0.125^3x(0.25)^3x2^x(-2)^12=
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![0.125^3x(0.25)^3x2^x(-2)^12=](/uploads/image/f/25923-3-3.jpg?t=0.125%5E3x%280.25%29%5E3x2%5Ex%28-2%29%5E12%3D)
是这样的:x^5+x^4=x^3(x^2+x)=(x^2+x)[(x^3-1)+1]=(x^2+x)(x^3-1)+x^2+x=[x(x+1)(x-1)](x^2+x+1)+x^2+x=(x^3-x)
[x(x+1)+x平方(x-1)]+(-3x)=x²+x+x³-x²-3x=x³-2x
(-5X^3)(-2X^2)×4分之1X^4-2X^4(-0.25X^5)=10/4X^(3+2+4)+2*0.25X^(4+5)=2.5X^9+0.5X^9=3X^9
x1=2020²+21²=400+441=841=29²x2=119119²+120²=14161+14400=28561=169²再问:有
0.25-x=0.125×0.625x=1/4-5/64x=11/64不明白欢迎来求助!多谢了!
1第一题我没看懂2因为f(2+x)=f(2-x),所以函数f(x)的对称轴为x=2,画出抛物线的图象(开口向上),得出f(4)>f(1)>f(2)
再答:再答:再问:负数我不明白啊再答:你们没有学吗再问:没啊
X-0.25X=30.75X=3X=4
设x1=4-√3,x2=4+√3,是方程X^2-8X+13=0的两根所以X1^2-8X1+15=2X^4-6X^3-2X^2+18X+23=(X+1)^2*(X^2-8X+13)+10=10所以原式=
(1)5x-10-2x>=-603x>=-50x>=-50/3数轴:__-50/3|---0---(2)3-2x>2x加上40x
答:x^2-3x
能看懂的话在继续研究吧,太复杂了.
原式=[x/(x-3)]-[5x/(x²-x-6)]=[x/(x-3)]-(5x)/[(x-3)(x+2)]=[x(x+2)]/[(x-3)(x+2)]-(5x)/[(x-3)(x+2)]=
1/2x^2-1/4x+0.2x^3+0.25x-0.5x^2-1/5x^3+0.5x-1=(1/2x^2-0.5x^2)+(0.25x-1/4x)+(0.2x^3-1/5x^3)+0.5x-1=0.
1/2x³-1/4x+0.2x²+0.25x-0.5x³-1/5x²=(1/2x³-0.5x³)+(0.2x²-1/5x²
令(x+3)(x-2)=0,解得:X=2或X=-3所以(x+3)(x-2)
#includesintjiesheng(intn)//用于计算阶乘如:3!{if(n=1)rerunn;returnn*hh(n-1)}doubledigui(intn,intx)//用以计算y=x
不知道你^这个符号什么意思暂且当成平方做吧x^2+4x+3=(x+1)(x+3)(2x-x)^2=x^2x^2+x=x(x+1)x^2+x-6=(x+3)(x-2)约分:得x/(x-2)再问:题目炒错
等于(x-1)(x-2)(x-3)(x-4)...(x-50)的导数
/>(x+2)/(x+1)-(x+3)/(x+2)-(x+4)/(x+3)+(x+5)/(x+4)=1+1/(x+1)-1-1/(x+2)-1-1/(x+3)+1+1/(x+4)=1/(x+1)-1/