[phpBB Debug] PHP Warning: in file [ROOT]/ext/lmdi/autolinks/event/listener.php on line 237: Undefined array key 9 [phpBB Debug] PHP Warning: in file [ROOT]/ext/lmdi/autolinks/event/listener.php on line 237: Trying to access array offset on value of type null Question 23 Determine the points at which the function is discontinuous. 5x-1 h(x) = √√x-9 (-0,91 O (-0,9) 09 O [9,0) - Answer Happy