Texas Instruments TI-86 - Manual (Page 48)

36
Chapter 1: Operating the TI -86
01OPER.DOC TI-86, Chap 1, US English Bob Fedorisko Revised: 02/13/01 2:18 PM Printed: 02/13/01 2:59 PM Page 36 of 22 01OPER.DOC TI-86, Chap 1, US English Bob Fedorisko Revised: 02/13/01 2:18 PM Printed: 02/13/01 2:59 PM Page 36 of 22
Vector Coordinate Modes
RectV (rectangular vector coordinates) Displays answers in the form
ãx yä
for two-element
vectors and
ãx y zä for three-element vectors
CylV (cylindrical vector coordinates) Displays results in the form
ãr ± q ä for two-element
vectors and
ãr ± q z
ä for three-element vectors
SphereV (spherical vector coordinates) Displays results in the form
ãr ± qä for two-element
vectors and
ãr ± q ± f ä
for three-element vectors
Differentiation Modes
dxDer1 (exact differentiation) Uses der1 (Chapter 3) to differentiate exactly and calculate the
value for each function in an expression ( dxDer1 is more accurate than dxNDer , but it
restricts the kinds of functions that are valid in the expression)
dxNDer (numeric differentiation) Uses nDer to differentiate numerically and calculate the value
for an expression ( dxNDer is less accurate than dxDer1 , but more kinds of functions
are valid in the expression)
Vector modes do not affect
how you enter vectors.
The value stored to d affects
dxNDer (Appendix).