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

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Answer 1 · 2017-04-21T09:43:45

Domain : $R$

Range : $y >=1$

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

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