Casio FX-991ES User Manual Page 70

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Ch-68
函數計算輸入範圍和精確度
函數 輸入範圍
DEG 0x 910
9
sinx RAD 0x 157079632.7
GRA 0x 110
10
DEG 0x 910
9
cosx RAD 0x 157079632.7
GRA 0x 110
10
DEG sinx 相同,除了x= (2n–1)90 外。
tanx RAD sinx 相同,除了x= (2n–1)π/2 外。
GRA sinx 相同,除了x= (2n–1)100 外。
sin
–1
x
0x1
cos
–1
x
tan
–1
x 0 x 9.99999999910
99
sinhx
0x230.2585092
coshx
sinh
–1
x 0x4.99999999910
99
cosh
–1
x 1 x 4.99999999910
99
tanhx 0x9.99999999910
99
tanh
–1
x 0x9.99999999910
–1
logx/lnx 0x 9.99999999910
99
10
x
–9.99999999910
99
x 99.99999999
e
x
–9.99999999910
99
x 230.2585092
'x 0 x 1 10
100
x
2
x 110
50
1/x x 110
100
; x G 0
3
'x x 110
100
x!0 x 69 (x 是一整數)
nPr
0 n 110
10
, 0 r n (nr 都是整數)
1 {n!/(nr)!} 110
100
nCr
0 n 110
10
, 0 r n (nr 都是整數)
1 n!/r! 110
100
1 n!/(nr)! 110
100
Pol
x, y 9.99999999910
99
(x, y)
x
2
+y
2
9.99999999910
99
'
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