Question

Can anyone help me with cubic functions?

Answer 1

maybe :)

Answer 2

YAY!!!! :)

Answer 3

I will award anyone who helps me with a medal!!!!

Answer 4

what's the question? :)

Answer 5

Ok. First I am going to tell you why I need the help. My math class doesn't have a text book so I can't look up how to do this stuff. And it is really confusing. My teacher just asked us to: Give an equation for a cubic function where the graph is always increasing.

Answer 6

ooh I remember these.. one second and I'll find it iin my book

Answer 7

try y = x^3

Answer 8

Thank you so much! I also need:

2.Give an equation for a cubic function where the graph is always decreasing.
3. Give an equation for a cubic function where the graph changes from increasing to decreasing and back again.

Answer 9

just use the negative

Answer 10

I can't really remember so I'm just going to type things that seem relevant and maybe I'll eventually remember..
so, first ting I found was when A>0 and b>1 the graph will keep increasing away from the x-axxis .. that was under graphing exponential functions of the form ab^x
a cubic function is usually given by f(x)=ax^3+bx^2+cx+d
it would look like: