Casio CFX-9800G-w Owners Manual - Page 88
Equation, Calculations
UPC - 079767128685
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6-4 Matrix Operation Precautions 'Calculation ofdeterminants 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 calculation may require considerable time. •The calculation precision of matrix calculations is 10 digits, ± 1. •If 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 0-0:Mat if kMat a Mat Det Mat a-0( Trn Mat a-'Mat Mat p -1-•Mat Mat a2-•Mat With the above input, a - 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. Equation Calculations- 7-1 Before Beginning an Equation Calculation 7-2 Linear Equations with Two to Six Unknowns 7-3 Quadratic and Cubic Equations 7-4 What to Do When an Error Occurs -140-