Texas Instruments TI-89 User Manual - Page 908
Program segment, Request Enter Your Name, str1
UPC - 033317196326
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‡() (square root) 2 ] key ‡ (expression1) ⇒ expression ‡ (list1) ⇒ list Returns the square root of the argument. For a list, returns the square roots of all the elements in list1. ‡(4) ¸ ‡({9,a,4}) ¸ 2 {3 ‡a 2} Π( ) (product) MATH/Calculus menu Π(expression1, var, low, high) ⇒ expression Evaluates expression1 for each value of var from low to high, and returns the product of the results. Π(1/n,n,1,5) ¸ Π(k^2,k,1,n) ¸ 1 120 (n!)ñ Π({1/n,n,2},n,1,5) ¸ {1210 120 32} Π(expression1, var, low, lowì 1) ⇒ 1 Π(k,k,4,3) ¸ 1 Π(expression1, var, low, high) ⇒ 1/Π(expression1, var, high+1, lowì 1) if high < lowì 1 Π(1/k,k,4,1) ¸ 6 Π(1/k,k,4,1)ù Π(1/k,k,2,4) ¸ 1/4 G() (sum) MATH/Calculus menu G (expression1, var, low, high) ⇒ expression Evaluates expression1 for each value of var from low to high, and returns the sum of the results. G(1/n,n,1,5) ¸ 137 60 G(k^2,k,1,n) ¸ nø (n + 1)ø (2ø n + 1) 6 G (expression1, var, low, lowì 1) ⇒ 0 G (expression1, var, low, high) ⇒ ë G ( expression1, var, high+1, lowì 1) if high < lowì 1 # (indirection) CATALOG # varNameString Refers to the variable whose name is varNameString. This lets you create and modify variables from a program using strings. G(1/n^2,n,1,ˆ) ¸ pñ 6 G(k,k,4,3) ¸ 0 G(k,k,4,1) ¸ ë5 G(k,k,4,1)+G(k,k,2,4) ¸ 4 Program segment: © :Request "Enter Your Name",str1 :NewFold #str1 © © :For i,1,5,1 : ClrGraph : Graph iù x : StoPic #("pic" & string(i)) :EndFor © 908 Appendix A: Functions and Instructions