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+a)+bcos(πx+β)+4,且f(1999)=3,求f(2000) asin(θ+α)+bsin(θ+β)=?化简f(x)=asin(πx+α)+bcos(πx+β)且f(2009)=3,则f(2010)=? 1.函数f(X)=asin(X+π/4)+3sin(X-π/4)是偶函数,则a= 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 已知函数f（x）=Asin（2x+φ）,当x=-π/3时,最小值为-4, 已知函数 f(x)=Asin(π/3x+b),x∈R,A>0,0 已知函数f(x)=asin(πx+α)+bcos(πx+β)+4,x∈R,且f(2011)=3,则求f(2012)的值 f(x)=asin(πx+a)+bcos(πx+b)+4 f(2010)=5 f(2013)= f(x)=asin(πx+a)+bcos(πx+b),且f(2009)=3,求f(2010) 已知f(x)=asin(πx+α)+bcos(πx+β)+4,且f(2004)=3,则f(2007)的值为? 函数f(x)=Asin(2π/3-x)cosx的最大值是不是A 是f(x)=4sin(2π/3-x)cosx的最大值是 若函数f(x)=Asin(x+π/4)+3sin(x-π/4)是偶函数,求f(x)的最大值 已知函数f(x)=更号2asin(x-π/4)+a+b 当a 已知函数f(x)=Asin 如何将f(x)=3sinx + 4cosx 化简为f(x)=Asin(x+b)如题~ 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