(1)∵f(x)是幂函数,∴
b−3=0
a−b=1,
解得a=4,b=3.
∴b2log32−a−
1
2=32log32−4−
2=3log322−
4
2=4−
2=[7/2].
(2)原式=1−0+0−
3
4=[1/4].