“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)”=
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![“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)”=](/uploads/image/z/5036576-32-6.jpg?t=%E2%80%9C%E8%AE%BEf%28x%29%3Dasin%28%CF%80x%2B%CE%B1%29%2Bbcos%28%CF%80x%2B%CE%B2%29%2Ca%2Cb%2C%CE%B1%2C%CE%B2%E5%9D%87%E4%B8%BA%E9%9D%9E%E9%9B%B6%E5%AE%9E%E6%95%B0%2C%E8%8B%A5f%282008%29%3D-1%E5%88%99f%282009%29%E2%80%9D%3D)
“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
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“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)”=
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