# Math 2270-2 # Maple Project I # # Part A: some matrix algebra questions # (These questions are modified from problems on page 27 of the text # Multivariable Mathematics with Maple, by J.A. Carlson and J.M # Johnson.) You are to create a document in which you answer the # following questions, via a mixture of Maple computations and textual # insertions. You are to print out a copy of this document to hand in, # as part A of your first Maple project. Don't forget to put your name # and section number on it! # Define [1 2 3] [ ] A := [4 5 6] [ ] [7 8 9] [2 1 0] [ ] B := [1 2 1] [ ] [0 1 2] # # 1a) Compute AB and BA. Are they the same? # 1b) Compute A+B and B+A. Are they the same? # 1c) Define C to be A+B. Compute C^2 and compare it to A^2 + 2AB + # B^2. Are they the same? Can you think of a small change you could # make in the expression ``A^2 + 2AB + B^2'' in order to make it equal # to C^2? Justify your answers! # 1d) Define v=(1,2,3) to be a vector. Compute Av. What does Maple # give you when you try vA? # 1e) Solve Bx=v for x, where v is the vector in (1d). Get your # solution all three ways that were indicated above: by row-reducing # the augmented matrix, by using the command ``linsolve'', and by using # the inverse matrix to B. # # 2a) Solve Ax=v for x, where A and v are as indicated above. Verify, # with Maple, that your solution x actually solves the equation Ax=v. # 2b) Repeat your work above in order to solve Ax=w, where w=(-1,4,1). # Explain your answer. # # Part B: make a fractal # Create a document in which you create a fractal. You may choose to # reproduce one of the more interesting fractals from the class notes or # chapter xeroxes, or you may create your very own. Your document # should explain the process you went through to create the fractal, and # should include the affine mapping picture (the "L" picture), and # explanations of what each affine map does geometrically. Of course # you may cut and paste the various procedures which automate this # process; there are links to these on our Maple page. # #