Question

What is the domain and range of `(x^4 + x^2) /(1+x^2)`?

Answer 1

Domain: `x`
Range: `x^2`

Explanation:

Given,

`f(x)=(x^4+x^2)/(x^2+1)`
`or, f(x)=(x^2*(x^2+1))/(x^2+1)`
Hence, `f(x)=x^2`