0≤x≤π/2,则π/6≤2x+π/6≤7π/6
-1/2≤sin(2x+π/6)≤1
sin(2x+π/6)的最大值为1;最小值为-1/2.
0≤x≤π/2,则π/2≤2x+π/2≤3π/2
-1≤sin(2x+π/2)≤1
sin(2x+π/2)的最大值为1;最小值为-1.
0≤x≤π/2,则π/6≤2x+π/6≤7π/6
-1/2≤sin(2x+π/6)≤1
sin(2x+π/6)的最大值为1;最小值为-1/2.
0≤x≤π/2,则π/2≤2x+π/2≤3π/2
-1≤sin(2x+π/2)≤1
sin(2x+π/2)的最大值为1;最小值为-1.