函数y=2sin(x+π/12)+√2cos(x+π/3)求最大值 过程详细点
问题描述:
函数y=2sin(x+π/12)+√2cos(x+π/3)求最大值 过程详细点
答
y=2sin(x+π/12)+√2cos(x+π/3)=2sin(x+π/12)+ √2cos((x+π/12)+π/4)=2sin(x+π/12)+ √2cos(x+π/12)*cosπ/4-√2sin(x+π/12)*sinπ/4=2sin(x+π/12)+ cos(x+π/12)-sin(x+π/12)=sin(x+π/12)+ co...