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ranyai12
Group Title
Please help!!
The area of a rectangle with dimensions x and y is A(xy)=xy. Find the differential of this function.
dA=
If you measure x=6 and y=10, with a measurement error of +/ 0.16, use the differential to estimate the possible error in the caculated area. (Assume that all expressions are in cm. Do not include units in your answer.)
possible error =
 one year ago
 one year ago
ranyai12 Group Title
Please help!! The area of a rectangle with dimensions x and y is A(xy)=xy. Find the differential of this function. dA= If you measure x=6 and y=10, with a measurement error of +/ 0.16, use the differential to estimate the possible error in the caculated area. (Assume that all expressions are in cm. Do not include units in your answer.) possible error =
 one year ago
 one year ago

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ranyai12 Group TitleBest ResponseYou've already chosen the best response.0
I go the first part to equal ydx+xdy but idk what to do for the second part
 one year ago

ranyai12 Group TitleBest ResponseYou've already chosen the best response.0
@jonnymiller can you please help?
 one year ago

jonnymiller Group TitleBest ResponseYou've already chosen the best response.0
is this differential equations?
 one year ago

ranyai12 Group TitleBest ResponseYou've already chosen the best response.0
no its multivariable variables
 one year ago

jonnymiller Group TitleBest ResponseYou've already chosen the best response.0
sorry, I have no idea how to do this
 one year ago

ranyai12 Group TitleBest ResponseYou've already chosen the best response.0
its ok thank you
 one year ago

Waynex Group TitleBest ResponseYou've already chosen the best response.1
Think of the differential equation as saying the change in A = y times the change in x + x times the change in y.\[\Delta A = y * \Delta x + x * \Delta y.\] Plug your x and y values into their appropriate x and y variables. The change in x could be as much as + or  .16. So plug .16 in delta y and delta x. \[\Delta A = 10(\Delta 0.16) + 6(\Delta 0.16)\] There are questions (on psets/exams) later on in the course that use this concept.
 one year ago

ranyai12 Group TitleBest ResponseYou've already chosen the best response.0
thank you!
 one year ago
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