Question

Which of the following is an odd function?

a) f(x)=3x2+x
b)f(x)=4x3+7
c)f(x)5x2+9
d)f(x)=6x3+2x

Answer 1

the other guy is correct. its d!

Explanation:

edge2020

Answer 2

hello :
odd function is : d) f(x)=6x3+2x
because for all x in R : f(-x) = 6(-x)3 +2(-x)
= -6x3-2x.........(-x)3= -x3
= -(6x3+2x)
f(-x) = -f(x)