Question

the function f(x)= x^4+cos^2x is
a) an even function
b) odd function
c) neither even nor odd
d) a constsnt term

Answer 1

Its E, a cheesecake

Answer 2

What do your instincts tell you?
If they're mum on the matter, try evaluating f(-x) like last time... :D

Answer 3

do the same thing put -x at the place of x.
and check it f(-x)=f(x) its an even
And if f(-x)=-f(x) its an odd

Answer 4

First factor out the frosting, then eat the jelly

Answer 5

also,
cos(-x) = cos(x) may help u here

Answer 6

ok its even !

Answer 7

no its odd

Answer 8

even = \(\checkmark\)

Answer 9

it is even cause 4 times minus is +

Answer 10

also with the cos thing

Answer 11

yep