What is #\lim _ { x \rightarrow - 3^ { + } } \frac { 2x } { x + 3}#?
1 Answer
The limit is
Explanation:
If we substitute
We got zero in the denominator, so the resulting limit is either (
To determine the sign of the limit we have to find the signs of both numerator and denominator.
The numerator is
If we do so, the denominator becomes
The numerator and denominator are of different signs, so their quotient is negative, so the limit is