/ / 2\\ lim \(-4 + x)*log\x // x->0+
Limit((-4 + x)*log(x^2), x, 0)
oo
= 40.0717846569457
/ / 2\\ lim \(-4 + x)*log\x // x->0-
= 70.6844259346837
40.0717846569457