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Help needed for some calculus Work!!!

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Old 08-04-2013, 08:53 PM   #1
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Help needed for some calculus Work!!!

Can't figure out some problems... Here's one of them Help needed for some calculus Work!!!-imageuploadedbytapatalk1375674813.306054.jpg
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Old 08-04-2013, 10:00 PM   #4
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When did they put letters in that shit
its fuckin psychotic
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Old 08-04-2013, 10:05 PM   #6
Pineapples on pizza Hawaiian does not it make.
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Quote:
Originally Posted by tacomathunder View Post
Can't figure out some problems... Here's one of them Attachment 226815
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Originally Posted by tacomathunder View Post
Attachment 226824That's another one
ill help you on these later

vid chatting the gf. haha
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Old 08-04-2013, 10:15 PM   #7
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tacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shed
 
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Originally Posted by Konaborne View Post
ill help you on these later

vid chatting the gf. haha
lol, thanks
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Old 08-04-2013, 10:32 PM   #8
I doughnut belong here.
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Asian to the rescue.
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Old 08-05-2013, 12:59 AM   #10
Pineapples on pizza Hawaiian does not it make.
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For the first one, remember that
derivatives

e^x = e^xdx

and
e^x^2 = 2xe^x^2


the second derivative from there
f " (x) = 2 * e^x^2 * (2x^2 + 1) (chain rule)

the chain rule is the PITA here

f'(4) = plug in 4

f"(4)=...plug in 4

then use the derivatives to find the zeros, and use these as critical points; no given interval means the endpoints are infinity and negative infinity
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Old 08-05-2013, 01:01 AM   #11
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tacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shed
 
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Quote:
Originally Posted by Konaborne View Post
For the first one, remember that
derivatives

e^x = e^xdx

and
e^x^2 = 2xe^x^2


the second derivative from there
f " (x) = 2 * e^x^2 * (2x^2 + 1) (chain rule)

the chain rule is the PITA here

f'(4) = plug in 4

f"(4)=...plug in 4
you lost me lol, forgive me, but im not great at this stuff, its just a requirement lol
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Old 08-05-2013, 01:15 AM   #12
Pineapples on pizza Hawaiian does not it make.
Konaborne is one of the sharper tools in the shedKonaborne is one of the sharper tools in the shedKonaborne is one of the sharper tools in the shedKonaborne is one of the sharper tools in the shedKonaborne is one of the sharper tools in the shedKonaborne is one of the sharper tools in the shedKonaborne is one of the sharper tools in the shedKonaborne is one of the sharper tools in the shedKonaborne is one of the sharper tools in the shedKonaborne is one of the sharper tools in the shedKonaborne is one of the sharper tools in the shed
 
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Let L be the length of the box, and let the girth equal the width AND the height of the rectangle (hence square ends)
volume = V = L*w^2
L + 4*w <= 114 inches


because of this,


L = 114 - 4*w
V = (114 - 4*w)*w^2

= 114*w^2 - 4*w^3, giving V as a function of only w.

which is what you want; since optimization relates something to something else
With the equation above, you can get dV/dW, since everything is now in terms of volume to width

so you can derive that and see what you get for w/h
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Old 08-05-2013, 01:18 AM   #13
Pineapples on pizza Hawaiian does not it make.
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Originally Posted by tacomathunder View Post
you lost me lol, forgive me, but im not great at this stuff, its just a requirement lol
you know how to derive, right?
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Old 08-05-2013, 01:21 AM   #14
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tacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shedtacomathunder is one of the sharper tools in the shed
 
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Quote:
Originally Posted by Konaborne View Post
you know how to derive, right?
yeah
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Old 08-05-2013, 01:32 AM   #15
Pineapples on pizza Hawaiian does not it make.
Konaborne is one of the sharper tools in the shedKonaborne is one of the sharper tools in the shedKonaborne is one of the sharper tools in the shedKonaborne is one of the sharper tools in the shedKonaborne is one of the sharper tools in the shedKonaborne is one of the sharper tools in the shedKonaborne is one of the sharper tools in the shedKonaborne is one of the sharper tools in the shedKonaborne is one of the sharper tools in the shedKonaborne is one of the sharper tools in the shedKonaborne is one of the sharper tools in the shed
 
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when deriving e^x

the derivative is just e^x

unless there are coefficients involved

like the derivative of e^2x
is
2e^2x because of the chain rule

so the derivative of e^x^2 (x^2= 2xdx) is
2xe^x^2
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Old 08-05-2013, 10:36 AM   #16
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For a guy with a glove on his head, you sure do know calculus! The glove keeps the smart in maybe...
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Old 08-05-2013, 10:41 AM   #17
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I'm pretty sure I did these same problems back in calc. That was like 5 years ago though.
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Old 08-05-2013, 10:42 AM   #18
I like the Anaheim Ducks
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For a guy with a glove on his head, you sure do know calculus! The glove keeps the smart in maybe...
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Old 08-06-2013, 09:19 PM   #19
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...a maximization/minimization problem... formulate "cost function", ..and find maxima or minima (peaks, valleys)...
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Old 08-06-2013, 09:32 PM   #20
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= find another shipper
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