设f(x)=sinx f(x+2π)=

设f(x)满足f(-sinx)+3f(sinx)=4sinx*cosx(x的绝对值小于等于π/2) 设y=sinx/x^2,求f'(π/3) 设f(x)满足f(-sinx)+3f(sinx)=4sinx乘以cosx,(绝对值x 设函数f(x)=sinx+sin(x+π/3) 设f’(sinx)=1+x,求f(x) 设函数f(x)=sinx/tanx 设函数f(x)=x·sinx证明:f(x+2kπ)-f(x)=2kπ·sinx 设函数f(x)连续,lim((f(x)/x)-1/x-(sinx/x^2))=2,f(0)=? 设f(x-1)={-sinx/x,x>0;2,x=0;x-1,x 设f（x）满足f（-sinx）+3f（sinx）=4sinx乘以cosx（丨x丨≤π/2） 设函数f(x)=-x^3+3x+2,若不等式f(3+2sinx) 设f(sinx)=x/sin^2 x 求∫f(x)dx