33
Basic Calculations
Chapter 2
Example
To calculate
x
and
y
when
r
= 25 and
%
= 56
°
Operation
Display
!Z
cc
1
(Deg)
Q
K[
2
(ANGL)
[[
2
(Rec()
25
,
56
)
w
Ans
1 –13.979–
#
13.97982259 (
x
)
2 – 20.725 –
#
20.72593931 (
y
)
(5) Permutation and Combination
u
u
u
u
u
Permutation
u
u
u
u
u
Combination
Example
To calculate the possible number of different arrangements
using 4 items selected from among 10 items
Formula
Operation
Display
10
P
4
= 5040
10
K
4
(PROB)
2
(
n
P
r
)
4
w
5040
Example
To calculate the possible number of different combinations of
4 items that can be selected from among 10 items
Formula
Operation
Display
10
C
4
= 210
10
K
4
(PROB)
3
(
n
C
r
)
4
w
210
(6) Other Things to Remember
k
k
k
k
k
Multiplication Sign
You can leave out the multiplication sign in any of the following cases.
• In front of the following scientific functions:
sin, cos, tan, sin
–1
, cos
–1
, tan
–1
, log, In, 10
x
,
e
x
,
,
3
, Pol(
x
,
y
), Rec(
r
,
%
),
d
/
dx
,
Seq, Min, Max, Mean, Median, List, Dim, Sum
Examples: 2 sin30, 10log1.2, 2 3, etc.
• In front of constants, variable names, Ans memory contents.
Examples: 2
"
, 2AB, 3Ans, 6X, etc.
• In front of an open parenthesis.
Examples: 3(5 + 6), (A + 1)(B –1)
n
!
n
!
n
P
r
= –––––
n
C
r
= –––––––
(
n
–
r
)!
r
! (
n
–
r
)!
Summary of Contents for fx-7400G
Page 46: ...Differential Calculations Chapter 3 ...
Page 164: ...161 1 2 3 4 5 Program for Circle and Tangents No 4 Step Key Operation Display ...
Page 165: ...162 Program for Circle and Tangents No 4 Step Key Operation Display 6 7 8 9 10 ...
Page 166: ...163 11 12 13 14 15 Program for Circle and Tangents No 4 Step Key Operation Display ...
Page 167: ...164 16 17 18 Program for Circle and Tangents No 4 Step Key Operation Display ...
Page 170: ...167 1 2 3 4 5 Program for Rotating a Figure No 5 Step Key Operation Display ...
