Question

What is the domain and range of `y = x^4 + 1`?

Answer 1

Domain : `R`

Range : `y >=1`

Explanation:

graph the function graph{x^4+1 [-5, 5, -2.5, 2.498]}
you can see that the smallest value occurs at `x=0`

which is `f(x)=1`

when plotting x with `x<1` or `x>1` you get `f(x)>1` because this

is an even function so the end behaviour is always `f(x)` increasing

whether to the left or to the right