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

1 Answer
Apr 21, 2017

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