Texas Instruments TI-89 and TI-92 Plus Computer 

Last page update: Sunday, November 21, 1999 
Taylor Approximations (Multivariable) - for the TI-89 and TI-92 Plus
Version 0.1   (Wednesday, November 17, 1999)
Download [ taylr.89f  | taylr.9xf ] (1,677 bytes)
Description Taylor approximations about a point for multivariable functions. 

CAUTION: This function is still being developed and may have errors. I haven't done any testing with three or more variables. Check all your work.

Screen shots
Screen image 
Documentation Usage: 
taylr(Expr, VarOrList, Order, PointOrList

Expr: The function to be approximated. 

VarOrList: The variable or a list of variables to consider in the approximation. Variables not listed will be treated as constants. 

Order: The order of the power series desired. 

PointOrList: The point or a list of points corresponding to the variable in VarOrList.

Return value: (EXPR)
The Taylor or McLaurin approximation.

1.  taylr(exyz, {x, y, z}, 1, {1,1,1})