f'(3)=-2,求lim[2x-3f(x)]/(x-3),注:x->3
设lim(x→0)[f(x)-3]/x^2=100,求lim(x→0)f(x)
求极限当x→0若lim[sin6x+x f(x)]/x^3=0,求lim[6+ f(x)]/x^2
已知lim(x→0)[f(3x)/x]=3 求lim(x→0) [2x/f(5x)]
已知x-->0时,lim{ln[1+f(x)/tanx]/(3^x-1)}=2,求lim(x-->0)[f(x)/x^2
f(x)在x=0的某邻域内二阶可导,且lim (x->0) (sin3x/x^3 + f(x)/x^2) =0,求lim
已知f(x)是多项式,lim x→∞【f(x)-2x^3】/x^2=2 ,lim x→0【f(x)/x】=3 求f(x)
f(x)为多项式且lim(x->∞)(f(x)-4x^3)/x^2=1,lim(x->0)f(x)/x=5,求F(X)的
f(x)在x=2处连续,lim[f(x)/(x-2)]=3 (X趋向于2),求f(2)和f'(2)
设f'(x) = 3^(1/2) ,求 lim(h→0) [f(x+mh) - f(x - nh)] / h ,(m ,
设函数f(x)在x=2处连续,且lim(x→2)f(x)/(x-2)(x→2)=3,求f'(2).
F(X)满足F(x)+2f(x分之1)=3X,求f(x)
已知f(x)满足2f(x)+f(1/x)=3x,求f(x)