El profesor se sorprenderá mucho al ver tu solución correcta😉
/ / 2/3 \ \ | / 2 \ |3*x*|x| sign(x)| | | 8*\x - 1/*|---------- + -------| / 2\ | ___________ | / 2 \ 2/3 | 2 3 _____| / 2 \ 2/3 | 4 2 / 2 \ / 2 \ | 2/3| / 3 |-8*\x - 1/*|x| \ x - 4 \/ |x| / 8*\x - 1/*|x| \12*x + 15*x *\x - 4/ + \x - 4/ /*|x| | 3 / / 2 \ 2*|------------------ + --------------------------------- - ----------------- + -------------------------------------------|*\/ \x - 4/ | 2 9*x 2 2 / 2 \ | \ x - 4 3*x 3*x *\x - 4/ / -------------------------------------------------------------------------------------------------------------------------------------------- = 0 2 x - 4