Texas Instruments TI-89 User Manual - Page 901
Subtracts each, element
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list1 + list2 ⇒ list matrix1 + matrix2 ⇒ matrix Returns a list (or matrix) containing the sums of corresponding elements in list1 and list2 (or matrix1 and matrix2). Dimensions of the arguments must be equal. {22,p,p/2}! L1 ¸ {10,5,p/2}! L2 ¸ L1+L2 ¸ {22 p p/2} {10 5 p/2} {32 p+5 p} ans(1)+{p,ë 5,ë p} ¸ {p+32 p 0} [a,b;c,d]+[1,0;0,1] ¸ [ ] a+1 b c d+1 expression + list1 ⇒ list list1 + expression ⇒ list Returns a list containing the sums of expression and each element in list1. expression + matrix1 ⇒ matrix matrix1 + expression ⇒ matrix Returns a matrix with expression added to each element on the diagonal of matrix1. matrix1 must be square. 15+{10,15,20} ¸ {10,15,20}+15 ¸ 20+[1,2;3,4] ¸ {25 30 35} {25 30 35} [231 224] Note: Use .+ (dot plus) to add an expression to each element. ì (subtract) | key expression1 - expression2 ⇒ expression Returns expression1 minus expression2. list1 - list2 ⇒ list matrix1 - matrix2 ⇒ matrix Subtracts each element in list2 (or matrix2) from the corresponding element in list1 (or matrix1), and returns the results. Dimensions of the arguments must be equal. expression - list1 ⇒ list list1 - expression ⇒ list Subtracts each list1 element from expression or subtracts expression from each list1 element, and returns a list of the results. expression - matrix1 ⇒ matrix matrix1 - expression ⇒ matrix expression ì matrix1 returns a matrix of expression times the identity matrix minus matrix1. matrix1 must be square. matrix1 ì expression returns a matrix of expression times the identity matrix subtracted from matrix1. matrix1 must be square. Note: Use .. (dot minus) to subtract an expression from each element. 6ì 2 ¸ 4 pì pà6 ¸ 5ø p 6 {22,p,pà2}ì {10,5,pà2} ¸ {12 pì 5 0} [3,4]ì [1,2] ¸ [2 2] 15ì {10,15,20} ¸ {10,15,20}ì 15 ¸ 20ì [1,2;3,4] ¸ {5 0 -5} {-5 0 5} [1ë93 ë162] Appendix A: Functions and Instructions 901