Finite Math MATH 105
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This 3 page Class Notes was uploaded by Claudie Wintheiser on Monday October 5, 2015. The Class Notes belongs to MATH 105 at Christian Brothers University taught by John Peacher-Ryan in Fall. Since its upload, it has received 6 views. For similar materials see /class/219432/math-105-christian-brothers-university in Mathematics (M) at Christian Brothers University.
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Date Created: 10/05/15
Math 105 Spring 2008 Raw Operations Using tho Ti83 entered in the editor To egtltitthe rhatrigtlt editor press 2 OUiT 3 Editing Matrices To cnangatna entry in row 1 column 2 of matrix A to 55 5 5 STO A i2 roiiowed by ENTER You Cari aiso use the Matrix Editor 4 Row Operation Ginaral To paste the riarhe of a matrix Press 2quot MATRiX With NAMES arrow down to the riarhe you choose and ENTER row matrix 1 2 interchanges Ri arid R2 ruwmatrix 1 2 outs RiR2 in R2 rowelus m nx 1 outs vaiue Ri in PM value matrix 1 2 putsvaiue Ri R2 iri R2 6 uset e nw 7A1 rigthe rat ori oft 3 rar H e As an exampie 3 sro A repiaces A With a new matrix obtained rrorn A by third row With itseir pius 7tirhes the rirst row For ariot er row he same type press 7quot ENTER Your iast entry row7 A 1 A i A Use the cursor Example Solve the following system of equations using your calculator 4x5y 43 2x 3y 17 Before you start notice that if the rst two rows look like this then you have solved the system of equations because this pattern in the first two columns means the same thing as the following equations 1x 0y 0x 1y 80 now we have a strategy rst get zeroes in the right places and second get ones in the right places Solving the example problem Step 1 Input the matrix 1 2quotd Matrixquot 2 Down arrow 39 to an available matrix name and press ENTER In this example I assume that the matrix is B 3 Input the matrix using the right arrow and then ENTER Wrtie the matrix ou in ut in the table Step 2 Solve the system of equations 1 Eliminate the 2 in R2 row 5B12quot Then check our matrix to make sure that there is a 0 where the 2 had been and STOgtB Write the resulting matrix in the table Problems Solve the systems of equations using augmented matrices and your calculator 1 36x 41y 6487 41x 36y 6372 2 51x 95y 5731 32x 36y 2628
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