x三次方的驻点-搜答案-神马作文网

X³+Y³=(X+Y)(X²-XY+Y²)

原式=(8x^6-6x^6-12x^5)÷(-2x²)=(2x^6-12x^5)÷(-2x²)=-x^4+6x³再问：=(2x^6-12x^5)÷(-2x²)=

x^3+y^3+x^2=xy两边对X求导3x^2+3y^2*y'+2x=y+xy'3y^2*y'-xy'=y-3x^2-2x(3y^2-x)y'=y-3x^2-2xy'=(y-3x^2-2x)/(3y

切点是P(1,5)又：y=2x³＋3,得：y'=6x²得切线的斜率是k=6则切线方程是：y=6(x－1)＋5化简得：6x－y－1=0

1.(-2x²)³-(-x³)²=-8x^6-x^6=-9x^62（-x）^8×（y^6）^(1/2)（x⁴×y⁴）²×y&#

对y=x^3求导,得y=3x^2.设切点为(m,m^3)则过该切点的切线方程为y-m^3=(3m^2)(x-m)切线过点(1,0),所以有0-m^3=(3m^2)(1-m)化简得,(2m-3)m^2=

=xy(4x²+4xy+y²)=xy(2x+y)²

(x-n)*(x^2+x*n+n^2)

x+y的三次方*x+y的二次方=(x+y)^3(x+y)^2=(x+y)^(3+2)=(x+y)^5

x的三次方+8y三次方=(x+2y)(x平方-2xy+4y平方）

x³y-xy³=xy(x²-y²)=xy(x+y)(x-y)

x^3＋x^3＝2x^3x^3－x^3＝0a^2•（－a^4）＝－a^6－a^2•（－a^4）＝a^6－x•x^2＝－x^3(－x)^2•x^3＝x^5

请说明x的趋向!

y'=3x²当x=-1时y'=3切线斜率为3代入点坐标（-1,0）切线方程为y=3x+3再问：y'=3x²3是斜率？3不是a吗？再答：？？是呀！ax+by+c=0斜率是-a/b我设

x^3+x-y^3-y=(x^3-y^3)+(x-y)=(x-y)(x^2+xy+y^2)+(x-y)=(x-y)(x^2+xy+y^2+1).x^3-x^2-y^3+y^2=(x^3-y^3)-(x

您好：x的三次方(y-x)的三次方-(x-y)的三次方=x的三次方(y-x)的三次方+(y-x)的三次方=（x³+1）(y-x)³=（x+1）（x²-x+1）(y-x)&

解-(-x²)³×(-x²)²-x×(-x³)³——是这个吗=x^6×x^4-x×(-x^9)=x^10+x^10=2x^10

答案是y=3x-2再问：函数y=2+lnx在（1，2)处的切线方程是多少？

17x的9次方,上式为2x的9次方-64x的9次方+81x的9次方

设A=三次根号K,则A=X·三次根号2007=Y·三次根号2008=Z·三次根号2009A／X＝三次根号2007,A／Y＝三次根号2008,A／Z＝三次根号2009.A／X＋A／Y＋A／Z＝三次根号2