User manual - fx-5800P_Supplement

– 7 –
X
P
= Rcos
+
X
A
α
Y
P
= Rsin
+
Y
A
α
29
R
1
=
R
4
R
5
+ R
5
R
6
+ R
6
R
4
R
5
R
2
=
R
4
R
5
+
R
5
R
6
+
R
6
R
4
R
6
R
3
=
R
4
R
5
+ R
5
R
6
+ R
6
R
4
R
4
(R
4
, R
5
, R
6
> 0)
30
R
4
=
,
R
5
R
1
R
2
R
1
+ R
2
+ R
3
=
,
R
2
R
3
R
1
+ R
2
+ R
3
R
6
=
R
3
R
1
R
1
+ R
2
+ R
3
(R
1
, R
2
, R
3
> 0)
31
[(X
A
, Y
A
), Rec(R, )→(X
p
, Y
p
)]
α
32
a = b
2
+ c
2
– 2bc cos A
(b, c > 0, 0˚ < A < 180˚)
a
2
= b
2
+ c
2
– 2bc cos A →
b
2
= c
2
+ a
2
– 2ca cos B
c
2
= a
2
+ b
2
– 2ab cos C
33
r
2
Qq
F =
4
0
π
ε
1
(r > 0)
34
S = 1
3
+ 2
3
+ ······ + n
3
=
{
}
2
n(n + 1)
2
35
A
i
[dB] = 20 log
10
[d B]
(
)
Ι
2
Ι
1
(Ι
2
/ Ι
1
> 0)
36
σ
y = × 10 + 50
x – x
A
( > 0)
σ
(X
A
, Y
A
)
(X
p
, Y
p
)
α
R
X