设函数F(x)=4sinx[sin(π/4+x/2)的平方〕+cos2x,条件P:π/6

问题描述:

设函数F(x)=4sinx[sin(π/4+x/2)的平方〕+cos2x,条件P:π/6

数学人气:900 ℃时间:2019-10-23 11:27:30
优质解答
F(x)=4sinx[sin(π/4+x/2)的平方〕+cos2x
=2sinx[1+sinx]+cos2x
=2sinx+2sin^2x+1-2sin^2x=1+2sinx
π/6

F(x)=4sinx[sin(π/4+x/2)的平方〕+cos2x
=2sinx[1+sinx]+cos2x
=2sinx+2sin^2x+1-2sin^2x=1+2sinx
π/6