User manual - fx-100AU_PLUS
E-35
k When I execute a function calculation, why do I get a calculation result 
that is completely different from older CASIO calculator models? 
  With a Natural Textbook Display model, the argument of a function that 
uses parentheses must be followed by a closing parenthesis. Failing to 
press ) after the argument to close the parentheses may cause unwanted 
values or expressions to be included as part of the argument. 
  Example: (sin 30) + 15 v
  Older (S-VPAM) Model:   s 30 + 15 = 
15.5
  Natural Textbook Display Model: b s 30 )+ 15 =  15.5
 Failure to press ) here as shown below will result in calculation of sin 45. 
    s 30 + 15 =  0.7071067812










