Question

calculus, optimization

Answer 1

yeah..

Answer 2

yes, maybe because we have the sides = x and bottom and top = y

Answer 3

differential

Answer 4

This is a Simple qeustion!

Answer 5

go on

Answer 6

I'll help

Answer 7

please

Answer 8

It's easy :)

Answer 9

Give me 7 minutes. One moment while I generate an solution!

Answer 10

I don't get how to start..

Answer 11

Almost done.

Answer 12

\[A(x)=(216+4x)(216+6x)\] does not require calculus to find the minimum
min is at the vertex

Answer 13

this would be the area?

Answer 14

216 square inch
length x width= 216

Answer 15

I tried something like this

Answer 16

what to do next?

Answer 17

l=18
w=12
The dimensions of the smallest piece of wallboard is 18-6=12= length
and 12-4=8

Answer 18

I think I get it.. thank you

Answer 19

i hope you get it and your' welcome *you're

Answer 20

@Jesstho.-. Is there any logic back it up? How can you know the length of the sides are 18 and 12? Why aren't they 24 and 9? or else?

Answer 21

@lucaz I had the same problem with you when I took cal1. However, I have more given information than this one, (something like limit of the dimension, the ratio of the sides and so on) so that I could make equation on the given information, and then took derivative to find value of the min. To your problem, it's hard ..... to me. :)

Answer 22

@OOOPS it's ok.. thanks