HP Prime Graphing Wireless Calculator User Manual
Page 191

Functions and commands
187
Example:
gramschmidt
returns
halftan2hypexp
Returns an expression with sine, cosine, and tangent rewritten
in terms of half-tangent, and sinh, cosh, and tanh rewritten in
terms of the natural exponential.
halftan_hyp2exp(ExprTrig)
Example:
halftan_hyp2exp(sin(x)+sinh(x))
returns
halt
Used in programming to go into step-by-step debugging
mode.
hamdist
Returns the Hamming distance between two integers.
hamdist(Integer1, Integer2)
Example:
hamdist(0x12,0x38)
gives
3
has
Returns 1 if a variable is in an expression, and returns 0
otherwise.
has(Expr,Var)
Example:
has(x+y,x)
gives
1
head
Returns the first element of a given vector, sequence or string.
head(Vector) or head(String) or
head(Obj1, Obj2,…)
Example:
head(1,2,3)
gives
1
1 1 x
+
p q
,
(
)
p q
⋅
x
d
1
–
1
→
,
1
2
------- 1 x 1
–
+
6
3
-------
----------------------
2
x
2
---
tan
⋅
x
2
---
2
tan
1
+
--------------------------------
exp x
( )
1
exp x
( )
-----------------
–
2
------------------------------------------
+