Question

2012安徽高考题理科数学16题

Answer 1

当-π≤x≤ - π/2时

0≤x+π≤ π/2

g(x+π)=1/2-f(x+π)

=1/2-[ - 1/2sin2(x+π)+1/2]

=1/2sin2(x+π)

=1/2sin2x

g(x+π)=g(x+π/2)=g(x)

即g(x)=1/2sin2x

当-π/2