Assignment 3 typo

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ccc
Instructor
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Assignment 3 typo
In Q2 of A3, there is a typographical error:
where it says that
"you need to solve the linear system
J^{1} ( x bar ^ (k) ) v = f bar ( x bar ^ (k) ),
using backslash."
this should read
"you need to solve the linear system
J ( x bar ^ (k) ) v = f bar ( x bar ^ (k) ),
using backslash."
So the matrix of the linear system you solve is the Jacobian
(as is in the notes) and not the inverse Jacobian.
This is mathematically equaivalent to computing
v = J^{1} ( x bar ^ (k) ) * f bar ( x bar ^ (k) )
but you should not use inverses for computational purposes.


20140402 17:49 

g0christ
Student
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RE: Assignment 3 typo
Should f bar also be negative like in the lecture slides? (slide 212)


20140402 18:44 

ccc
Instructor
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RE: Assignment 3 typo
(20140402 18:44)g0christ Wrote: Should f bar also be negative like in the lecture slides? (slide 212)
It does not matter.
You can say
solve Js = f
compute x = x  s
or
solve Js = f
compute x = x + s
Just be consistent..


20140403 17:40 

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