Hi, I'm having a difficulty to understand the answer. If anybody could help me out, I would really appreciate it. Thanks,
Is X<0 ?
1) X^3(1-X^2)<0
2) X^2-1<0
I understand that from 1) we can get -1<X<0>1 and from 2) -1<X<1.
But together it only covers -1<X<0, it doesn't cover entire X<0, but still enough to answer C ?
Is X<0 ?
1) X^3(1-X^2)<0
2) X^2-1<0
I understand that from 1) we can get -1<X<0>1 and from 2) -1<X<1.
But together it only covers -1<X<0, it doesn't cover entire X<0, but still enough to answer C ?
