If #4-x^2>=0# isn't #x<=+-2#? I don't understand how #-2<=x<=2# is a result.
#4-x^2>=0# isn't #x<=+-2# ?
I don't understand how #-2 <=x<=2# is the result?
I don't understand how
1 Answer
Dec 28, 2017
Please see below.
Explanation:
As
This means product of
If both are positive we have
If both are negative we have
Hence answer is