In  case of VzA, press 2 13CM1|  X  II  A  ll~=~l  keys in this order.
/6 S!o|[A]  2  [I3 Ca ]C=]->-0.1  ~
\  2  S 3 H E J C 1 ] -   2.5  ± A
•  Even  in  the case of  (4), single-term function  has priority,  if it is directly preceded by two-term function in 2A Y X\J  3^ 
for  instance.
Ex.  \T ~ 2AYX>J  3  -*  y/~ (2 x (A Y x (s/~3)))
As  this  machine  is designed  to  execute  an  "Expression"  according  to  a  given  algebraic  formula,  some  of  the  instructions  or 
numerics included  in  the "Expression" can't be treated directly.
Therefore,  they are temporarily stored  in the built-in  buffers and the  rest is treated  in advance.
This  calculator  has  a  16-stage  function  buffer  and 8-stage data buffer in  it.  When  the calculation  exceeds  16-stage  in  function 
or 8-stage in  data  is performed,  an  error occurs.
Ex.  (1)  2 +  3 x  (\/  1 0 *(4 -   1.6x2 =
Functional buffer  :  8-stage
Data buffer  4-stage
8