11.f(x)=2sinx(sinx+cosx)=2sinx2+2sinxcosx =根号2sin(2x-π/4）+1（1）最小正周期T=π当sin(2x-π/4)=1时,f(x)有最大值,即f(x)=根号2 +1(2)图……=,= 自己画咩……12.f(x)=sin(x+π/6)+sin(x-π/6...