Matrix Operation Precautions; Quadratic And Cubic Equations - Casio CFX-9800G Owner's Manual

6-4 Matrix Operation Precautions * "
Calculation of determinants and inverse matrices uses the elimination method, so errors
. (such as. dropped digits) may be generated.
*The results of matrix calculations are stored into the Matrix Answer Memory (Mat Ans).
The Matrix Answer Memory dimensions are automatically adjusted to accommodate the
result. Note that storage of a new result causes the previous Answer Matrix Memory
contents to be deleted.
«Matrix operations are performed individually on each element, 'and so caletition may
require considerable, time. a i e
©The calculation precision of matrix calculations is.10. digits, +1... 2;
elf a matrix calculation result becomes too-large. to fit into. the Matrix Answer 'Memory
(Mat Ans),-a "Mem ERROR" occurs: :;. >
«You can transfer the contents of the Answer Matrix Memory to another matrix (or varia-
ble when the Answer Matrix Memory contains a matrix formula). The following input is
also possible:
Mat a+ (or—, x) Mat B>Mat y
kMat a—Mat 6
Det Mat aX : ve
Trn Mat a~Mat 8
Mat a-1->-Mat 6
Mat a2 Mat @
With the above input, « = variable A'through:Z; X = 'variable A:through Z.
Note that when you transfer the contents of the Answer Matrix Memory to another matrix,
the original contents of the Answer Matrix Memory are unchanged.
7-1 -Before Beginning an Equation Catculation
7-2 Linear Equations with Two to Six Unknowns
7-3 Quadratic and Cubic Equations
7-4 What to'Do When an Error Occurs