Question

:-) More calculus
http://gyazo.com/a966dfd3ea5dee63628dcd7e5629c3d1

Answer 1

can you draw a diagram and find a function of volume that we will need to maximize ?

Answer 2

@hartnn v = x (29-2x) (16-2x)?

Answer 3

correct! now i think there's no need of figure
just differentiate this and equate it =0

Answer 4

did you try differentiating ?
i suggest you foil to get a cubic polynomial and then differentiate

Answer 5

@hartnn is it 22.38, 9.38, and 3.31?

Answer 6

volume is 694.85

Answer 7

because the other root from the derivative is greater than 8. which would be out of the domain.

Answer 8

that is correct! good work :)

Answer 9

Okay one question.
http://gyazo.com/4203b8c511ab4faebf793e0a7e738f1b

R(x)+C(x)=P(x)
then what?

Answer 10

Or is it something with the derivatives of r(x) and c(x)? I forget >_<

Answer 11

isn't profit, revenue - cost ?

Answer 12

Oh right, yes.

Answer 13

so just maximize -0.5x^2 +55x-10

Answer 14

-0.5x^2+55x-10

Answer 15

Oh okay, then do I find the derivative and set it equal to zero for the number of units?

Answer 16

yes, exactly

Answer 17

(55,1502.5)

Answer 18

So it's $55 for 55 units..?

Answer 19

I feel like that's not correct. the deriv of it is 55-x though.

Answer 20

Or is it $1502.50 and 55 units?

Answer 21

i think those are correct
x is the unit = 55
profit is in $ = $1502.5

Answer 22

Okay:-) I'll post a new question so I can give you another medal. I also have a question since you're a moderator

Answer 23

sure, ask :)

Answer 24

Whenever I comment on something, it keeps showing that I am typing and I cannot comment again without refreshing the page or going to another question, i'll show you after this comment..

Answer 25

http://gyazo.com/8ee2dd2588fb43f66c5b6891c28f24a3

Answer 26

that either maybe because of the slow internet or slow OS servers....

Answer 27

It will never go away, it's just weird.