Texas Instruments TI89TITANIUM User Manual - Page 868
SendCalc, TI-92 Plus, or
UPC - 033317191833
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secL1() MATH/Trig menu secL1(expression1) ⇒ expression secL1(list1) ⇒ list Returns the angle whose secant is expression1 or returns a list containing the inverse secants of each element of list1. Note: The result is returned as a degree, gradian or radian angle, according to the current angle mode setting. In Degree angle mode: secL1(1) ¸ 0 In Gradian angle mode: secL1( 2 ) ¸ 50 In Radian angle mode: secL1({1,2,5}) ¸ { 0 p 3 cosL1(1/5)} sech() MATH/Hyperbolic menu sech(expression1) ⇒ expression sech(list1) ⇒ list Returns the hyperbolic secant of expression1 or returns a list containing the hyperbolic secants of the list1 elements. sech(3) ¸ 1 cosh(3) sech({1,2.3,4}) ¸ { 1 cosh(1) .198... cosh1(4)} sechL1() MATH/Hyperbolic menu sechL1(expression1) ⇒ expression sechL1 (list1) ⇒ list Returns the inverse hyperbolic secant of expression1 or returns a list containing the inverse hyperbolic secants of each element of list1. In Radian angle and Rectangular complex mode: sechL1(1) ¸ 0 sechL1({1,L2,2.1}) ¸ {0 (2 ¦ 3 p) ¦ i 1.074... ¦ i } Send CATALOG Send list CBL 2é (Calculator-Based Laboratoryé) or CBRé (Calculator-Based Rangeré) instruction. Sends list to the link port. Program segment: © :Send {1,0} :Send {1,2,1} © SendCalc CATALOG SendCalc var Sends variable var to the link port, where another unit linked to that port can receive the variable value. The receiving unit must be on the Home screen or must execute GetCalc from a program. If you send from a TI-89, TI-92 Plus, or Voyage™ 200 to a TI-92, an error occurs if the TI-92 executes GetCalc from a program. In this case, the sending unit must use SendChat instead. Program segment: © :a+b! x :SendCalc x © 868 Appendix A: Functions and Instructions