How do you graph #f(x)=-x^3# using zeros and end behavior?

1 Answer
Dec 13, 2017

As shown below:

Explanation:

The first thing to consider is how #-x^3# is just #x^3# reflected in the x axis:

We can sketch #x^3# : as #x->oo, x^3 -> oo#
as #x->-oo, x^3->-oo# as if #mu# is negative, then #mu^3# is also negative

Now we can cosnider the 'zeros', so hence: #x^3 = 0 => x = 0 #

Hence #x^3#: graph{x^3 [-10, 10, -5, 5]}

Reflecting: #-x^3#:

graph{-x^3 [-10, 10, -5, 5]}