函数y=x3+3x2-1的极值

问题描述:

函数y=x3+3x2-1的极值

y'=3x^2+6x=3x(x+2)=0
x1=-2,x2=0
x0,y'>0,函数递增,-2这道题原题是y等于x三次方减去3x平方减1的极值是什么?麻烦您帮忙解答一下谢谢Y=x^3-3x^2-1y'=3x^2-6x=3x(x-2)=0x1=0,x2=2x2,y'>0, 函数增,0