XXXX教育学科教师辅导讲义讲义编号____________________
f-=
解析'(3)
'=
f x
()
g x
()x和()
=,
g'
(2)
t=
6
=-
)()
(2
log
=
a
()h x '=∴当1x ≤∴)(x h 在[min ()h x ∴
