“设f(x)=asin(πx+α)+bcos(πx+β),a,b,α,β均为非零实数,若f(2008)=-1则f(2009)”=

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/08 14:01:35
“设f(x)=asin(πx+α)+bcos(πx+β),a,b,α,β均为非零实数,若f(2008)=-1则f(2009)”=

“设f(x)=asin(πx+α)+bcos(πx+β),a,b,α,β均为非零实数,若f(2008)=-1则f(2009)”=
“设f(x)=asin(πx+α)+bcos(πx+β),a,b,α,β均为非零实数,若f(2008)=-1则f(2009)”=

“设f(x)=asin(πx+α)+bcos(πx+β),a,b,α,β均为非零实数,若f(2008)=-1则f(2009)”=
asin(2008π+α)+bcos(2008π+β),
=asinα+bcosβ
=-1
asin(2009π+α)+bcos(2009π+β)
=-asinα- bcosβ
=1