User Manual
E-6
  Inputting Expressions and Values
   4  × sin30 × (30 + 10 × 3) = 120 v
   4  *s 30 *( 30 + 10 * 3 )=
   Note:   • The memory area used for calculation input can hold 79 
“steps”. One step is taken up each time you press a number key or 
arithmetic operator key ( +, -, *, /). A 1 or S key operation 
does not take up a step, so inputting 1^( 
x 
'), for example, 
takes up only one step.  • Whenever you input the 73rd step of any 
calculation, the cursor changes from “_” to “ k” to let you know memory 
is running low. 
  Calculation Priority Sequence
  When the priority of two expressions is the same, the calculation is 
performed from left to right. 
 1st 
 Function with parentheses: Pol ( 
x , y ), Rec ( r ,  ), 
differentials ( 
d/dx ), integrations ( ∫ dx ), normal distribution 
(P ( , Q ( , R ( ) 
 2nd 
 Type A functions: With these functions, the value is 
entered and then the function key is pressed. ( 
x 
3 
, x 
2 
, x  
−1 
, 
x !, ° ’ ”, m, m
1 
, m
2 
, n, ' t , °, 
r 
, 
g 
, engineering symbols, metric 
conversions *) (*fx-570MS/991MS only) 
 3rd 
 Powers and roots: ^( 
x 
y 
), 
x 
'
 4th Fractions 
 5th 
 Implied multiplication of π , 
e  (natural logarithm base), 
memory name, or variable name: 2 π , 3 
e , 5A, π A, etc. 
 6th 
 Type B functions: With these functions, the function key is 
pressed and then the value is entered. ( ', 
3  
', log, ln, e 
x 
, 
10 
x 
, sin, cos, tan, sin 
−1 
, cos 
−1 
, tan 
−1 
, sinh, cosh, tanh, sinh 
−1 
, 
cosh 
−1 
, tanh 
−1 
, (−), d, h, b, o, Neg, Not, Det *, Trn *, arg, Abs, 
Conjg) (*fx-570MS/991MS only) 
 7th 
 Implied multiplication of Type B functions: 2 '3, Alog2, etc. 
 8th 
 Permutation ( n P r ), combination ( n C r ), complex number 
polar coordinate symbol ( ∠ ) 
 9th Dot product (·) (fx-570MS/991MS only) 
 10th 
 Multiplication, division ( × , ÷) 
 11th Addition, subtraction (+, –) 
 12th Logical AND (and) 
 13th Logical OR, XOR, XNOR (or, xor, xnor) 
• The negative sign (–) is treated as a Type B function, so particular 
care is required when the calculation includes a high-priority Type A 
function, or power or root operations.
 Example: (−2)
4
 = 16; −2
4
 = −16










