Matrices with a Calculator ??
Matrices with a Calculator ??
(OP)
I have some what of a dilemma, I was asked to do some analysis that involved Matrices. Ok fine .
However I didn't have any reference material with me I put it of until tomarrow, since I havn't done Matrices since the middle of the Sixties ( the 1960s) and needed to 'whip out my circuits' book and jog my memory.
Looking over the chapters I came across the crux of my problem, the chapter on complex numbers was going fine until I came to the section that said. "Using the slide-rule for complex numbers".
I have no idea where my 'old' K&E is, can someone recommend a calculator that does Matrices and complex numbers.
I have been away from that end of it for quite awhile.
WmColt
However I didn't have any reference material with me I put it of until tomarrow, since I havn't done Matrices since the middle of the Sixties ( the 1960s) and needed to 'whip out my circuits' book and jog my memory.
Looking over the chapters I came across the crux of my problem, the chapter on complex numbers was going fine until I came to the section that said. "Using the slide-rule for complex numbers".
I have no idea where my 'old' K&E is, can someone recommend a calculator that does Matrices and complex numbers.
I have been away from that end of it for quite awhile.
WmColt






RE: Matrices with a Calculator ??
RE: Matrices with a Calculator ??
I'd much rather use a general math program like Mathcad than a calculator for complex numbers and matrices. Easier to find and correct mistakes.
RE: Matrices with a Calculator ??
RE: Matrices with a Calculator ??
TI's are cheaper and work just as well. You can even get one at Wal-mart instead of some specialty place. TI is my preference (in case you can't tell, hehe). I believe a TI-85 is around $80 US. An HP is well above $100 last time I looked ('92).
RE: Matrices with a Calculator ??
RE: Matrices with a Calculator ??
RE: Matrices with a Calculator ??
http://electronics.mysic.com/Calculator.html
http://www.abacci.com/webdev/topic.aspx?topicID=7009
etc. for more info
RE: Matrices with a Calculator ??
If you are into the masochism, you could go for matlab or mathematica... but they are more aimed at the rocket scientist types.
Bung
Life is non-linear...
RE: Matrices with a Calculator ??
http://www.mathwizards.com/downloadp.html
It can handle (small) matrices and complex variables.
RE: Matrices with a Calculator ??
Since Excel is wide available, this could be used as an alternative for complex calculation with matrices with moderate degree of efficiency. Check in the help menu the following build-in functions such as: COMPLEX(), MINVERSE(), SUMPRODUCT(), TRANSPOSE(), MMULT(), MDETERM(), from IMABS() to IMSUM().
The calculation of the inverse complex matrix can be determined solely based upon the inverses of decomposed real matrices.
Z = A + i.B Z-1 = C + i.D
Where:
Z is a complex matrix Z^-1= inverse complex matrix
A & B are two real matrices C & D real matrices
I= Identity matrix (all elements=1) i = Imaginary unit = SQRT(-1)
Matrices C &D could be calculated in Excel as function of two given real matrices A & B as follow:
? For A nonsingular , det(A) ?0. [For example, for 3x3 matrix with data from A1 to C3 in Excel, select an empty cell MDETERM(A1:C3)]
C = [A + BA-1 B]-1 & D= -CBA-1
? If A is singular (det(A)= 0):, but B is nonsingular, ( det(B) ?0):
C = B-1 A [B + A B-1A]-1 & D = [CA – I]B-1
RE: Matrices with a Calculator ??
RE: Matrices with a Calculator ??