A:2
B:-2
C:3
D:-3
读拼音写词语。
páng bó
yě xìng
pān yuán
páng yì xié chū
____
已知函数f(x)=32sin2x-cos2x+12.
(1)当x∈0,π2时,求函数f(x)的取值范围;
(2)将f(x)的图象向左平移π6 个单位得到函数g(x)的图象,求g(x)的单调递增区间.
The mother is worried ________ her son's study.