f(x)=2sin(sinx+cosx)1.求f(x)最小正周期和最大值2.求f(x)的增区间

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f(x)=2sin(sinx+cosx)1.求f(x)最小正周期和最大值2.求f(x)的增区间f(x)=2sin(sinx+cosx)1.求f(x)最小正周期和最大值2.求f(x)的增区间f(x)=2

f(x)=2sin(sinx+cosx)1.求f(x)最小正周期和最大值2.求f(x)的增区间
f(x)=2sin(sinx+cosx)
1.求f(x)最小正周期和最大值
2.求f(x)的增区间

f(x)=2sin(sinx+cosx)1.求f(x)最小正周期和最大值2.求f(x)的增区间
f(x)=2sinx(sinx+cosx)
=2sin^2x+2sinxcosx
=2sinxcosx+2sin^2x-1+1
=sin2x-cos2x+1
=根号2sin(2x-π/4)+1
(1)
f(x)最小正周期π 最大值=根号2+1
(2) 增区间 2kπ-π/2