Question

方程|x2-2x|=m有两个不相等的实数根,则m的取值范围

Answer 1

1 l(x-1)^2-1l=m

l(x-1)^-1l>=1

m>=1

2 f(6)=6*f(6-1)

=6*f(5)

=6*5*f(5-1)

=6*5*f(4)

=6*5*4*f(3)

=6*5*4*3*f(2)

=6*5*4*3*2f(1)

=6*5*4*3*2*1*f(0)

=6*5*4*3*2*1*1=720

祝你进步,有不会的可以再问我哦

我很乐意为您解答疑惑O(∩_∩)O~