f(x)=asin(πx+α)+bcos(πx+β)+4(a,b,α,β均为非零实数)若f(2012)=6,则f(2013)=?

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f(x)=asin(πx+α)+bcos(πx+β)+4(a,b,α,β均为非零实数)若f(2012)=6,则f(2013)=?f(x)=asin(πx+α)+bcos(πx+β)+4(a,b,α,β

f(x)=asin(πx+α)+bcos(πx+β)+4(a,b,α,β均为非零实数)若f(2012)=6,则f(2013)=?
f(x)=asin(πx+α)+bcos(πx+β)+4(a,b,α,β均为非零实数)若f(2012)=6,则f(2013)=?

f(x)=asin(πx+α)+bcos(πx+β)+4(a,b,α,β均为非零实数)若f(2012)=6,则f(2013)=?
f(2012)=asin(2012π+α)+bcos(2012π+β)+4
=asinα+bcosβ+4
=6
所以asinα+bcosβ=2
f(2013)
=asin(2013π+α)+bcos(2013π+β)+4
=asin(π+α)+bcos(π+β)+4
=-asin(α)-bcos(β)+4
=-2+4
=2