f(x)=sin(x-1)/(x-1),在x→1时的极限

f'(sin x)=1-cos x 求f''(x) f(x)=sin-1次方 x ,求f'(x) f(cosx)=1+sin²x,求f(x) f(sin 2/x )=1+cosx 求f(x) 设f（x）={x^sin(1/x),x>0 a+e^x,x f(x)={(1-e^x)/sin(x/2) ,x>0 ;ae^2x,x 讨论函数f(x)=(x^α)sin(1/x),x>0；(e^x)+β,x 傅里叶级数作图f（x）=2sin[x] - sin[2x] + 2/3sin[3x] - 1/2sin[4x]我用mathematica输入程序Plot[{2sin[x],-2sin[x],2sin[x] - sin[2x],-2sin[x] + sin[2x],2sin[x] - sin[2x] + 2/3sin[3x],-2sin[x] + sin[2x] - 2/3sin[3x],2sin[x] - sin[2x] + 2/3si 设f(x) =sin x除以Ln(x-1),则f(x) 的定义域为 已知函数f(x)=(1+1 anx)sin^2x+m sin(x+π/4)sin(x-π/4) f(x)=（1+cotx)sin^2x-2sin(x+π/4)sin(x-π/4)还有一题, f(x)=(1+1/tanx)sin(x)^2化简 复合函数f（x）=x^2sin(1/x) （x>0） f(x)=0 x 化简f(x)=(1+cos2x)sin^2x f(x)=sin^2x+sinxcosx-1/2,化简 函数f(x)=sin(πx²)(-1 f(x)=sin(πx^2)(-1 已知函数f(x)=sin^5x+1根据