.已知f(x+1⼀x)=x^2+1⼀x^2,求f(x)的解析式.

2025-03-17 09:26:59
推荐回答(2个)
回答1:

答:
x^2+1/x^2
=x^2+2*x*(1/x)+1/x^2-2
=(x+1/x)^2-2

回答2:

x^2+1/x^2+2-2=(x+1/x)^2-2