|
[VIEWED 4590
TIMES]
|
SAVE! for ease of future access.
|
|
|
|
Narnia
Please log in to subscribe to Narnia's postings.
Posted on 11-26-09 1:29
AM
Reply
[Subscribe]
|
Login in to Rate this Post:
0 
? 
|
| |
hey guys, I need a little help solving few questions from business mathematics.It is about differentiation and implicit differentiation, so if any body got some knowledge on this, Please help..I would really appreciate this. the question like this:: Evaluate dy/dt for the function at the point. x 3 + y 3 = 9; dx/dt = -3, x = 1, y = 2  [Disallowed String for - script not allowed] type="text/javascript"> formCheckList.addElement(new Check_Answer({ref_label:"1",name:"mc-ans-_42615512_1"})); [Disallowed String for - script not allowed] type="text/javascript"> formCheckList.addElement(new Check_Answer({ref_label:"1",name:"mc-ans-_42615512_1"}));
|
| |
|
|
|
|
syal
Please log in to subscribe to syal's postings.
Posted on 11-26-09 1:58
AM
Reply
[Subscribe]
|
| Login in to Rate this Post:
0
?
|
| |
Evaluate dy/dt for the function at the point.
x3 + y3 = 9; dx/dt = -3, x = 1, y = 2
Differentiating with respect to t on both sides; d(x^3 + y^3)/dt = d(9)/dt dx^3/dt + d y^3/dt = 0
Applying chain rule; (dx^3/dx)*(dx/dt) + (dy^3/dy)*(dy/dt) =0; (3x^2)* (-3) + (3y^2)*(dy/dt) = 0 (3*1) * (-3) + (3* 4) * (dy/dt) = 0 -9 + 12 * (dy/dt) = 0 12(dy/dt) = 9 dy/dt =9/12 = 3/4
I hope it helps.... ("^' means "to the power")
|
| |
|
|
Narnia
Please log in to subscribe to Narnia's postings.
Posted on 11-26-09 2:16
AM
Reply
[Subscribe]
|
| Login in to Rate this Post:
0
?
|
| |
thanks a lot...didnt expect that quick but,,i really do appreciate that.. you must be very good at maths... well man,,,i suck at maths...and i am taking this online class....i am really struggling to at least pass this course.......... well,,thanks again...hope you dont mind if have to ask another one some other time....:)
|
| |
|
|
jptsamachar
Please log in to subscribe to jptsamachar's postings.
Posted on 11-26-09 8:56
AM
Reply
[Subscribe]
|
| Login in to Rate this Post:
0
?
|
| |
hoina class nai jaane garya chaina ni kya ho...yeti sajilo pani na-aayeko....this is a very basic problem from differetiation... If you are skipping classes...pls dont....you are the one who pays for the college...not your boring professor..
|
| |
|
|
pyaradeshbasiharu
Please log in to subscribe to pyaradeshbasiharu's postings.
Posted on 11-26-09 9:00
AM
Reply
[Subscribe]
|
| Login in to Rate this Post:
0
?
|
| |
|
|
| |
