HP 49g - Page 42

42
IFTE
* = function
IFTE Executes the obj in argument 2 or level 2 if T/F is nonzero.
Executes the obj in argument 3 or level 1 if T/F is zero.*
<N BRANCH
T/F obj
true
obj
false
→
ILAP Returns the inverse Laplace transform of an expression.
The expression must evaluate to a rational fraction.*
<$
DIFFERENTIAL
EQNS
‘ symb
1
’
→ ‘ symb
2
’
IM Returns the imaginary part of its complex argument.* > ó
x
→ 0
INCR Takes a variable, adds 1, stores the new value back into
the original variable, and returns the new value.
<N MEMORY
ARITHMETIC
‘ name ’
→ x
increment
INDEP Specifies the independent variable and its plotting range. N
‘ global ’
→
INFORM Creates a user-defined input form (dialog box). <N IN
“ title ” { s
1
, s
2
, ... s
n
} format
{ resets } { init }
→ { vals } 1
INPUT Prompts for data input to the command line and halts
stack or command line operations.
<N IN
“ stack prompt ” “ command-line
prompt ”
→ “ result ”
INT Calculates the antiderivative of a function for a given
variable, at a given point.*
N
‘ symb
1
’ ‘ symb
2
’ ‘ symb
3
’
→ ‘ symb
4
’
INTVX Finds the antiderivative of a function symbolically, with
respect to the current default variable.*
<$ DERIV. &
INTEG
‘ symb
1
’
→ ‘ symb
2
’
INV Returns the reciprocal or the matrix inverse.* y
z
→ 1 /z
INVMOD Performs modular inversion on an object modulo the
current modulus.*
<! MODULO
obj
1
→ obj
1
Name Description Access Inputs Outputs