设z=2x+π/6,则：y=asinz+b因为x∈[-π/6,π/4],所以：z∈[-π/6,2π/3]显然,当z=π/2时,sinz有最大值,即y有最大值：y|max=asin(π/2)+b=a+b当z=π/6时,sinz有最小值,即y有最小值：-y|min=asin(-π/6)+b=-a/2+b依已...