Texas Instruments TI-73VSC Guidebook - Page 89

Chapter 5: Lists 83 Dependent Numerical Lists The numerical list described in the previous section (¨NUM) is an independent list. You also can create dependent lists, which are dependent (or based) upon the contents of another defined numerical list. You create a dependent list by attaching a formula to it. For example, "2 + L1," where L1 is already defined, is a formula. The formula always contains at least one other list. In addition, for a formula like L3="2 + L1+ L2," L1 and L2 must have the same number of elements. Then, each element in L3 is the result of the attached formula. When a formula is attached to a list, a small signifier (2) appears next to the list name. You cannot edit a dependent list by simply typing over an element as with independent lists. You must highlight the element you want to change, press b, and then edit it. However, this changes the entire list back to an independent list, and the formula and the formula signifier disappear. Also, it is possible to have multiple dependent lists all based on the same list (for example, L2="2+ L1," L3="3+L1," and L4="4+L1"). An attached formula can be enclosed in quotation marks (located in the Text editor). A list whose formula: • Is not enclosed in quotation marks is not automatically updated if the independent list changes. • Is enclosed in quotation marks is automatically updated if the independent list changes. ³ Convert the following six Celsius temperatures {M40,M15,M5,30,58,140} to Fahrenheit and display both lists in the List editor. Independent List ¨CEL={M40,M15,M5,30,58,140} Dependent List ¨FRHT="¨CEL degC8degF"