Can anyone solve this please show your work

The Second Gate As you move through the first gate, you can see another gate not far in front of you. You approach the second gate and your computer reads: "There are 2 values for which the below function does not exist. The passcode is the limit of g (a ) as a approaches the smaller of these two values." g (x) 2+6 x2-36 Your computer also reminds you to type "infinity" for oo, "-infinity" for -oo, and "NA" if the limit does not exist. What do you enter for your computer to translate? sin (a) ? M