若f(x)=asin(x+π/4)+bsin(x-π/4)(ab≠0)是偶函数,则有序实数对（a,b）可以是______(只需写一组)

已知函数f(x)=Asin(2x+a),若函数f(x+π/6)为偶函数,且f(π/6)=4,求f(x)解析式 若函数f(x)=(1+cos2x)/[4sin(π/2+x)]-asinπ/2cos(π-x/2) 若f(x)=asin(x+π/4)+3sin(x-π/4)是偶函数,则实数a= 若f(x)=asin(x+π/4)+3sin(x-π/4)是偶函数,求a f(x)=asin(x+π/4)+3sin(x-π/4)是偶函数,求a. f(x)=asin(πx+α)+bcos(πx+β),若f(2008)=1,求f(2010)? f(x)=asin(πx+a)+bcos(πx+b)+4 f(2010)=5 f(2013)= f(x)=asin(πx+a)+bcos(πx+β)+4,且f(1999)=3,求f(2000) 已知f(x)=aSin(πx+α)+bCos(πx+β)+4,若f(2009)=5,求f(2010)的值在线等.要过程.谢谢 若函数f(x)=Asin(x+π/4)+3sin(x-π/4)是偶函数,求f(x)的最大值 若函数f(x)=Asin(wx+a)(w>0,A>0,x属于R,-π 已知函数f(x)=更号2asin(x-π/4)+a+b 当a 已知函数f(x)=Asin 设函数f(x)=asin(2x+π/3)+b,(1)若a>0,求f(x)单调递增区间；设函数f(x)=asin(2x+π/3)+b,(1)若a>0,求f(x)单调递增区间；（2）x(0,π/4)时,f(x)的值域为（1,3）,求a,b的值 1.函数f(X)=asin(X+π/4)+3sin(X-π/4)是偶函数,则a= 已知函数f（x）=Asin（2x+φ）,当x=-π/3时,最小值为-4, 若f(x)=asin(x+TT/4)+3sin(x-TT/4) 是偶函数,则a= 若F(X)=ASIN(X+PI/4)+3SIN(X—PI/4)是偶函数,则A=