Question

define
l
$f {}^{ - 1} (x) = \frac{2x + y}{2}$
good night​

Answer 1

Answer:

Instead of saying a classic good night, you can say "night, night," "sweet dreams" or something similar. If you're saying good night to a spouse you can say something like "goodnight gorgeous, have beautiful dreams tonight." The best goodnight is what means the most to you

Explanation: