Calculus Optimization - Printed Area on a Poster

Finding the printed area of a poster using the first derivative test. These are tough questions but are a staple of calculus exams.

[saigeburnett]

Just want you to know I cried writing a test on this today. Teacher told me I could study and write it tomorrow so I came looking for your channel. I now feel more confident then ever to finish my test tomorrow. Thank you so much.
(I know this is cheesey but it's true)

[JoeThompson-dlzb]

This vid is a life saver. Thanks Mister

[barborahalova]

You just filled in all those blind spots I was left with from the class, thank you!

[ayen]

Those are the exact given number of sizes on my assignment

[Ivan-yqrc]

Better than my calculus professor and I'm in college

[samhaynes]

I couldn't get my head around this from the text book I'm working from but you made it make sense, thank you so much!!!!

[alexkoutrouliotis]

what does it mean if the number is a minimum?