y等于ax二次方与y等于负cx加b的图像是?
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![y等于ax二次方与y等于负cx加b的图像是?](/uploads/image/f/919844-44-4.jpg?t=y%E7%AD%89%E4%BA%8Eax%E4%BA%8C%E6%AC%A1%E6%96%B9%E4%B8%8Ey%E7%AD%89%E4%BA%8E%E8%B4%9Fcx%E5%8A%A0b%E7%9A%84%E5%9B%BE%E5%83%8F%E6%98%AF%3F)
y=ax²+bx+cy=-x²-3因为图像相同则:|a|=|-1|=1所以:a=-1或者a=1当a=-1时又因为过(-1,0),(0,6)代入得:-1-b+c=0c=6解得:a=-
原式=4x^(-6)y^6×(3x²y²)²=4x^(-6)y^6×9x^4y^4=36x^(-2)y^10=36y^10/x²
y=x^(-2)f(x)=x^(-2)f(-x)=(-x)^(-2)=x^(-2)=f(x)所以是偶函数!补充:f(x)=x^(-2)=1/x^2f(-x)=1/(-x)^2=1/x^2=f(x)所以
x=-2的时候y=5a*(-2)^5+b*(-2)^3+c*(-2)-1=5a*2^5+b*2^3+c*2+1=-5a*2^5+b*2^3+c*2=-6a*2^5+b*2^3+c*2-1=-7所以x等
因为不等式ax^2+bx+c>0的解是-1/2
x*xy-4y=y(x^2-4)=y(x+2)(x-2)
解y=ax³+bx+3x=3时,a×3³+3b+3=-7∴a×3³+3b=-10当x=-3时a×(-3)³-3b+3=-(a×3³+3b)+3=10+
y=ax^5+bx^3+cx-15=a(-2)^5+b(-2)^3+c(-2)-1=-32a-8b-2c-1=-(32a+8b+2c)-1-(32a+8b+2c)=632a+8b+2c=-6a(2)^
(xy)^-2=1/(xy)²=1/x²y²(x+y)^-2=1/(x+y)²=1/(x²+2xy+y²)
(x-y)³×(x-y)²×(y-x)=(x-y)³×(x-y)²×[-(x-y)]=-(x-y)的6次方
幂函数的指数是负数所以在第一象限是减函数指数是-2,是偶数所以关于y轴对称,所以在第二象限是增函数所以在(-∞,0)上是增函数在(0,+∞)上是减函数
x/y=-2则x=-2y则原式=(x²-2xy-3y²)/(x²-6xy-7y²)=(x+y)(x-3y)/(x+y)(x-7y)=(x-3y)/(x-7y)=
/>当x=3时y=ax^5+bx^3+cx-5=a*3^5+b*3^3+c*3-5=6a*3^5+b*3^3+c*3=11-[a*3^5+b*3^3+c*3]=-11a(-3)^5+b(-3)^3+c
解(x-y)(y-x)²(x-y)³=(x-y)(x-y)²(x-y)³=(x-y)^6
二次函数是抛物线,指数函数是曲线
x=-2,y=5代入得-32a-8b-2c-1=5即32a+8b+2c=-6当x=2时y=ax的5次方加bx的3次方加cx减1=32a+8b+2c-1=-6-1=-7
x=2y=5/3y的x次方=25/9
x^2-xy=14xy-3y^2=2求x^2+3xy-3y^2因为x^2-xy=1所以x^2=1+xy带入原式得4xy+1-3y^2因为4xy-3y^2=2将其带入原式得2+1=3
指数-2是负数所以由幂函数的性质在(0,+∞)上是减函数因为-2是偶数所以图像关于y轴对称所以和在(0,+∞)单调性相反所以在(-∞,0)上是增函数
x=-2,y=5所以a*(-2)^5+b*(-2)^3+c*(-2)-1=5a*2^5+b*2^3+c*2+1=-5a*2^5+b*2^3+c*2=-6则a*2^5+b*2^3+c*2-1=-7所以x