Full Command and Function Reference 3-125
Form of Current Equation Plotting Action
expr = expr Each expression is plotted separately. The intersection of the two
graphs shows where the expressions are equal
name = expr Only the expression is plotted
Access: …µ POLAR
Flags: Simultaneous Plotting (-28), Curve Filling (-31)
Input/Output: None
See also: BAR, CONIC, DIFFEQ, FUNCTION, GRIDMAP, HISTOGRAM, PARAMETRIC,
PARSURFACE, PCONTOUR, SCATTER, SLOPEFIELD, TRUTH, WIREFRAME, YSLICE
POLYNOMIAL
CAS: Display a menu or list of CAS operations with polynomials.
POP
Type: Command
Description: Restores the flags and current directory saved by the most recent execution of PUSH. If no
PUSH saves are left, the command has no effect.
Access: …µ
POP
Input: None
Output: In Algebraic mode the command returns NOVAL to level 1 of the stack.
See also: PUSH
POS
Type: Command
Description: Position Command: Returns the position of a substring within a string or the position of an
object within a list.
If there is no match for obj or substring, POS returns zero.
Access: !°L
CHARS POS ( °is the left-shift of the Nkey).
!°LIST ELEM POS ( °is the left-shift of the Nkey).
@& N POS
Input/Output:
Level 2/Argument 1 Level 1/Argument 2 Level 1/Item 1
“string” “substring”
→
n
{ list } obj
→
n
See also: CHR, NUM, REPL, SIZE, SUB
POTENTIAL
CAS: Find the potential field function describing a field whose vector gradient is input.
POWEXPAND
CAS: Rewrite an expression raised to a power as a product.
POWMOD
CAS: Raise number or expression to given power, expresse the result modulo the current modulus.
PR1
Type: Command
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