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Casio fx-85EX User Manual

Casio fx-85EX
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Precision
In general, ±1 at the 10th digit for a single
calculation. Precision for exponential display is
±1 at the least significant digit. Errors are
cumulative in the case of consecutive
calculations.
Function Calculation Input Ranges and Precision
Functions Input Range
sinx
cosx
Degree
0 |x| < 9 × 10
9
Radian
0 |x| < 157079632.7
Gradian
0 |x| < 1 × 10
10
tanx
Degree
Same as sinx, except when |x| = (2n−1) × 90.
Radian
Same as sinx, except when |x| = (2n−1) × π/2.
Gradian
Same as sinx, except when |x| = (2n−1) × 100.
sin
-1
x, cos
-1
x 0 |x| 1
tan
-1
x 0 |x| 9.999999999 × 10
99
sinhx, coshx 0 |x| 230.2585092
sinh
-1
x 0 |x| 4.999999999 × 10
99
cosh
-1
x 1 x 4.999999999 × 10
99
tanhx 0 |x| 9.999999999 × 10
99
tanh
-1
x 0 |x| 9.999999999 × 10
-1
logx, lnx 0 < x 9.999999999 × 10
99
10
x
-9.999999999 × 10
99
x 99.99999999
e
x
-9.999999999 × 10
99
x 230.2585092
𝑥
0 x < 1 × 10
100
x
2
|x| < 1 × 10
50
x
-1
|x| < 1 × 10
100
; x ≠ 0
𝑥
3
|x| < 1 × 10
100
x!0 x 69 (x is an integer)
nPr
0 n < 1 × 10
10
, 0 r n (n, r are integers)
1 {n!/(nr)!} < 1 × 10
100
nCr
0 n < 1 × 10
10
, 0 r n (n, r are integers)
1 n!/r! < 1 × 10
100
or 1 n!/(nr)! < 1 × 10
100
Pol(x, y)
|x|, |y| 9.999999999 × 10
99
𝑥
2
+𝑦
2
9.999999999 × 10
99
20

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Casio fx-85EX Specifications

General IconGeneral
TypeScientific
CoverYes
Form factorPocket
Control typeButtons
Keys quantity50 keys
Product colorBlack
Battery life1 year(s)
Battery typeLR44
Power sourceBattery/Solar
Number of batteries supported1
CertificationCE
Conversion betweenDecimal, Fraction, Percent
Convert angles from degrees toGradian, Radian
Digits- digits
Display type-
Display tiltingNo
Display resolution192 x 63 pixels
Display number of lines- lines
Weight and Dimensions IconWeight and Dimensions
Depth11.1 mm
Width77 mm
Height165.5 mm
Weight90 g

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