题目是这样:sin(π/4x+π/4)+2sin[π/4(x+2)+π/4]=2sin(π/4x+π/4)+2cos(π/4x+π/4)=2倍根号2*sin(π/4+π/2)
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题目是这样:sin(π/4x+π/4)+2sin[π/4(x+2)+π/4]=2sin(π/4x+π/4)+2cos(π/4x+π/4)=2倍根号2*sin(π/4+π/2)
题目是这样:sin(π/4x+π/4)+2sin[π/4(x+2)+π/4]
=2sin(π/4x+π/4)+2cos(π/4x+π/4)
=2倍根号2*sin(π/4+π/2)
题目是这样:sin(π/4x+π/4)+2sin[π/4(x+2)+π/4]=2sin(π/4x+π/4)+2cos(π/4x+π/4)=2倍根号2*sin(π/4+π/2)
题呢?
题目是这样:sin(π/4x+π/4)+2sin[π/4(x+2)+π/4]=2sin(π/4x+π/4)+2cos(π/4x+π/4)=2倍根号2*sin(π/4+π/2)
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