Please help with this vectors problem

Page 48
http://www.nelson.com/math/documents/Nelson%20C&V%20Ch%202.pdf

PLEASE HELP! Thanks in advance :)

Question

Please help with this vectors problem

Page 48
http://www.nelson.com/math/documents/Nelson%20C&V%20Ch%202.pdf

PLEASE HELP! Thanks in advance :)

anonymous · Answer

which problem?

anonymous · Answer

The whole question

anonymous · Answer

oh nevermind I was confused by the page numbers.

anonymous · Answer

:P

anonymous · Answer

Happens lol

anonymous · Answer

hmmm that's confusing.  is "n" the same as "n(d)"?

anonymous · Answer

I dont know...

anonymous · Answer

lol

anonymous · Answer

Hold on, let me find another link

anonymous · Answer

http://seh.ycdsb.ca/Departments/Mathematics/Costigan/MCV4U1/unit2/ch04.pdf pg 162

anonymous · Answer

Sorry, this one is too confusing.  I'm not sure if they want us to differentiate the equation or what.  I've never worked with the Elasticity equation.

anonymous · Answer

I see...
Thanks anyway

anonymous · Answer

Maybe we plug ($20) and ($80) into the n(p) equation.

anonymous · Answer

that will give you n(20) and n(80).

anonymous · Answer

then you subtract those two to get delta(n)

anonymous · Answer

|dw:1339724936039:dw|  that's my best guess.