HP Prime Graphing Calculator - Manual (Page 317)

Functions and commands 313
Modulus Modulo. The remainder of value1/value2.
value1 MOD value2
Example:
74 MOD 5
returns
4
Find Root Function root-finder (like the Solve app). Finds the value for the
given variable at which expression most nearly evaluates to
zero. Uses guess as initial estimate.
FNROOT(expression,variable,guess)
Example:
FNROOT((A*9.8/600)-1,A,1)
returns
61.2244897959.
Percentage x percent of y; that is, x/100*y.
%(x,y)
Example:
%(20,50)
returns
10
Complex
Argument Argument. Finds the angle defined by a complex number.
Inputs and outputs use the current angle format set in Home
modes.
ARG(x+y*i)
Example:
ARG(3+3*i)
returns
45
(degrees mode)
Conjugate Complex conjugate. Conjugation is the negation (sign
reversal) of the imaginary part of a complex number.
CONJ(x+y*i)
Example:
CONJ(3+4*i)
returns
(3-4*i)
Real Part Real part x, of a complex number, (x+y*i).
RE(x+y*i)
Example:
RE(3+4*i)
returns
3