求函数y=x³-x²-x+1的极值、单调区间
问题描述:
求函数y=x³-x²-x+1的极值、单调区间
答
y'=3x^2-2x-1=(3x+1)(x-1)>0时有x>1,xy=x³-x²-x+1y'=3x²-2x-1是怎么换算成(3x+1)??3X^2-2X-1=(3X+1)(X-1)这是因式分解啊
求函数y=x³-x²-x+1的极值、单调区间
y'=3x^2-2x-1=(3x+1)(x-1)>0时有x>1,xy=x³-x²-x+1y'=3x²-2x-1是怎么换算成(3x+1)??3X^2-2X-1=(3X+1)(X-1)这是因式分解啊