# How do you find the inflection point and concavity of #f(x)=x^(4)*ln (x)#?

##### 1 Answer

Jul 23, 2018

#### Explanation:

Since

To find an inflection point we need to find where

Since

Now, let's look at the graph of

graph{ x^4ln(x) [-0.234, 1.452, -0.2815, 0.561]}

We can see that

From the nature of