Dear Class, The maple2018 instructions apply to maple 9.5, 11, 12, 13, 14, 15, 16, 17, 18, 2015, 2016, 2017 with changes to command lines, e.g., change "maple2018" to "mapleV18" or "mapleV12". Some of the older maple versions don't work due to license agreements, e.g., mapleV18. To use maple 2018 on the local unix systems, invoke it by command line xmaple & or xmaple2018 & To use maple 9.5 with the classic window interface [no java], invoke it by the command line xmapleV9.5 -cw & After starting maple with GUI interface, set the OPTIONS on the tool menu as follows: Display --> Input display --> Maple Notation Display --> Output display --> 2D-Math Notation Interface --> Default format for new worksheets --> Worksheet Apply Globally When working with maple 2018, you should see red text on input and blue text on output. If your typing is black, then exit Maple, start it again, and look for a change. If no change, then repeat the steps above, assuming a typo. The linalg package works in maple 2018. Loading of package LinearAlgebra and then loading package linalg should make the commands of both available. Example 1: A:=<<1,0> | <2,3>>; # Enter cols of matrix A b:=<-1,1>; A.b; # multiply matrix A against column vector b. det(A); # No answer, needs linalg package Determinant(A); # No answer, needs LinearAlgebra package linalg[det](A); # works LinearAlgebra[Determinant](a); # also works Example 2: with(linalg): # Deprecated, still in maple 2018. C:=matrix([[1,2],[0,3]]);# In textbooks. Enter C by rows. eigenvects(C); Eigenvectors(C); # No answer, error message Example 3: with(LinearAlgebra): F:=Matrix([[1,2],[0,3]]);# Enter F by rows. Eigenvectors(F); Example 4: with(LinearAlgebra):with(linalg): A:=<<1,0> | <2,3>>; # Enter A by cols. Eigenvectors(A);Determinant(A); eigenvects(A);det(A); To set up maple 2018 on linux, windows and Mac OS/X systems, follow the advice above. To run the classic window interface under 32-bit windows, launch the application "cwmaple" located in the win.bin subdirectory of the maple2018 installation in Program Files. There is no classical interface available in linux V12 through 2018: use V9.5. The bare-bones terminal interface maple 2018 is launched on a unix system as follows: linux> maple |\^/| Maple 2018 (X86 64 LINUX) ._|\| |/|_. Copyright (c) Maplesoft, a division of Waterloo Maple Inc. 2015 \ MAPLE / All rights reserved. Maple is a trademark of <____ ____> Waterloo Maple Inc. | Type ? for help. > A:=Matrix([[1,2],[0,3]]); [1 2] A := [ ] [0 3] > linalg[eigenvects](A); [1, 1, {[1, 0]}], [3, 1, {[1, 1]}] > C:=<<1,2> | <0,3>>; [1 0] C := [ ] [2 3] > LinearAlgebra[Eigenvectors](C); [3] [0 -1] [ ], [ ] [1] [1 1] >B:=<-1,1>: C.B-B; [0] [ ] [0] >quit Best regards, Grant Gustafson