Question

Which of the following functions is/are even?

(I) g (t) = t^4 − 45
(II) h (t) = t^4 + t^3
(III) k (t) = t^4 + t^2 + 120

Answer 1

i think 111

Answer 2

because all are even (^42 and 120)

Answer 3

how do i determine whats even or not

Answer 4

if the power is even then the whole thing is even

Answer 5

\[f(-x)=f(x)\]
A function is even if it obeys this formula. What this means is that the graph is symmetrical about the y axis. For instance, cosine is an even function because
\[f(-\pi)=f(\pi)\]
\[-1 = -1\]