HP 49g Graphing Calculator - Manual (Page 180)

SINCOS
Type: Command
Description: Converts complex logarithmic and exponential
expressions to expressions with trigonometric terms.
Access: Trigonometry,
F](WG)
Input: An expression with complex linear and exponential
terms.
Output: The expression with logarithmic and exponential sub
expressions converted to trigonometric and inverse
trigonometric expressions.
Flags: Exact mode must be set (flag -105 clear).
Nmneric mode must not be set (flag -03 clear).
Must be in complex mode (flag -103 set).
Example: Express e'"'^ in trigonometric terms.
Command: S I N C O S ( E X P ( i * X ) )
Result: C O S ( X ) + i S I N ( X )
SOLVE
Type: Command
Description: Finds zeros of an expression equated to 0, or solves an
equation.
Access: Symbolic solve, Rgay)
Input: Level 2/Argument 1; The expression or equation.
Level 1/Argument 2: The variable to solve for.
Output: A list of zeros or solutions.
Flags: If exact mode is set (flag -105 clear) and there are no
exact solutions, the command returns a null list even
when there are approximate solutions.
Example: Find the zeros of the following expression:
- X - 9
Command: S O L V E ( X " 3 - X - 9 , X )
Result: { X = 2 . 2 4 0 0 4 0 9 8 7 4 7 }
See also: SOLVEVX
Computer Algebra Commands Page 14-57