Question

设f(x)=x的平方;除以1+x的平方,化简f（x)+f(x分之1）

Answer 1

用编程做的,X和Y都有,

[x,y]=solve('x+1/x=4','y=x^2/(x^4+x^2+1)')

x =

2+3^(1/2)

2-3^(1/2)

y =

1/15

1/15

>> 答案是Y=1/15