最小值是 -a+a/2+b=3/4
最大值是 a+a/2+b=7/4
a=1/2 b=1
2π/2w=π w=1
2 f(x)=1/2*sin(2x+π/6)+5/4
单调递增区间2x+π/6在 [2kπ-π/2,2kπ+π/2]
解得 x在[kπ-π/6, kπ+π/3]
最小值是 -a+a/2+b=3/4
最大值是 a+a/2+b=7/4
a=1/2 b=1
2π/2w=π w=1
2 f(x)=1/2*sin(2x+π/6)+5/4
单调递增区间2x+π/6在 [2kπ-π/2,2kπ+π/2]
解得 x在[kπ-π/6, kπ+π/3]