f(2004)=asin(2004π+α)+bcos(2004π+k)
= asinα + bcosk
即 -asinα -bcosk=1;
则 asinα + bcosk=-1;
则:f(2008)=asin(2008π+α)+bcos(2008π+k) = asinα + bcosk
=-1
f(2004)=asin(2004π+α)+bcos(2004π+k)
= asinα + bcosk
即 -asinα -bcosk=1;
则 asinα + bcosk=-1;
则:f(2008)=asin(2008π+α)+bcos(2008π+k) = asinα + bcosk
=-1