f(x-1/x)=x^3-1/x^3 则f(x)的解析式为?
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/25 08:44:26
xRJ@.3l3']t)EȲhZ[)Ņӟf_$}ۅ0$s9;FP\ES]][[QP4oAu6}/rT0s)-v^4 AS~J?:txNq$ɠJ
yvaÇ~uh*LyKѶ,L=CZ,MIJooG͢ ke'5,ZŲ]1C(<,0!d^ww ;3W&;G3
f(x-1/x)=x^3-1/x^3 则f(x)的解析式为?
f(x-1/x)=x^3-1/x^3 则f(x)的解析式为?
f(x-1/x)=x^3-1/x^3 则f(x)的解析式为?
f(x-1/x)=x^3-1/x^3
=(x-1/x)(x^2+1/x^2+1)
=(x-1/x)[(x^2+1/x^2-2)+3]
=(x-1/x)[(x-1/x)^2+3]
则设x-1/x=T
则f(T)=T*(T^2+3)
=T^3+3T
则f(x)=x^3+3x
x^3什么意思啊???X的三次幂???就当它算了,不是的话,你自己带
设X-1\X=t
则X-1\X可化为1-1\X=t
则1\X=1-t
把t带进x^3-1/x^3
可得f(t)=....
把t换成X即可
f(x-1/x)=x^3-1/x^3
=(x-1/x)(x^2+1/x^2+1)
=(x-1/x)(x^2+1/x^2-2+3)
=(x-1/x)((x-1/x)^2+3)
令x-1/x=t,于是
f(t)=t(t^2+3)
f(x)=x(x^2+3)
f(x)满足f(-x)+2f(x)=x+3,则f(1)等于
函数 f(x)=(x-1)(x-2)(x-3)...(x-2007) 则f'(2007)=?
函数 f(x)=(x-1)(x-2)(x-3)...(x-2007) 则f'(2007)=?
高数题:设f(x)=x.(x+1).(x+2).(x+n),则f 3Q
f(x)=x(x-1)(x-2)(x-3).(x-n),则f(x)的n+1阶求导
已知f(x)=x(x-1)(x-2)(x-3)(x-4)(x-5),则f‘(0)为
已知f(x)满足2f(x)+f(1/x)=3x,求f(x)
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)?
已知f(x)满足2f(x)+f(-x)=-3x+1,求f(x)
已知f(x)满足f(x)+2f(1/x)=3x,求f(x) ,
已知f(x)是偶函数,g(x)是奇函数,f(x)+g(x)=2x^3-x^2+3x+1,则f(x),g(x)为
设函数f(x)满足f(x+x^-1)=x^3+x^-3,则f(x)的表达式是
函数f(x)满足:f(x-1)=x(x-3),x∈R,则f(x)的最小值为
f(x-1)=x^2-2x+3(x
函数f(x)=3x/x2+x+1 (x
函数f(x)=3x/x2+x+1 (x
f(x)=(x-1)(x-2).(x-3)求导