设f(x)=πx+x^2(-π

设f(x)=πx+x^2(-π 设f(x)=sinx f(x+2π)= 设f(x)=x*sinx,求f'' (π/2) 设f(x)=∫(x,x+2π)e^sinx*sinxdx,则f(x)= 设函数 f(x)=sin(2x+y),(-π 设函数f(x)=sin(2x+φ)(-π 设函数f(x)=sin(2x+φ)(-π 设函数f x=SIN(2X+φ)(-π 设函数f(x)=sin(2x+φ)(-π 设函数f(x)=sin(2x+φ)(-π 设函数f(x)=sin(2x+φ)(-π 设函数f(x)=sin(2x+φ)(-π 设函数f(x)=sin(2x+ φ)(-π 设函数f(x)=sin(2x+φ)(-π 设函数f(x)=sin(2x+ φ)(-π 设函数f(x)=sin(2x+φ)(-π 设f(x)={sinπx(x 设f(x)={sinπx(x