54
CHAPTER 3
3 To obtain the value of Y
≥ A 0 3
+
2 –3
when the function Y has a
, —
3
,
3
) ®
minimum value (fmin).
Finds the smallest value
of “Y=X+2” (within the
range of -3 to 3).
1 Logarithm to the base 2:
≥ A 0 1
12
®
3.584962501
log
2
12
≥ A 0 6
3
-
0.5
Ó
+
6
,
2
,
8
≥ A 0 7
®
* Input sequence: ∫ f(x), lower limit, upper
limit [, tolerance] dx
• If tolerance is not specified, the default
setting is 1E-5.
• At least 3,000 bytes of free memory are
necessary to perform calculation.
6 Integral function:
“ (x
3
-0.5x
2
+6)dx”
25
7 Finds the total amount of
“Y=X+2” (within the range
of 1 to 5).
• The following table shows an input example for each function. (The examples show
only typical key operations.
≤, ≥, < and >, but the touch-pen may
also be used.)
(See the list in APPENDIX “6. Explanation of EL-9650 menus” for the explanation of
functions on page 284.)
No. Example Key operations Answer
The equation is entered in the sequence of
fmin (equation, lower limit value, upper limit
value and common difference). However
the common difference may be omitted.
4
2 2 to the Xth power:2
5
≥ A 0 2
5
®
32
2
4 To obtain the value of Y
when the function Y has a
maximum value (fmax).
Finds the largest value of
“Y=2X–3” (within the
range of -2 to 2).
≥ A 0 4
2
-
3
, —
2
,
2
) ®
* The input procedure for equations is the
same as for fmin.
5 Differential function
d/dx (x
2
–5)
(x = 2, when minute
interval is 0.001)
≥ A 0 5 Ó
-
5
,
2
,
0.001
) ®
(Input sequence: d/dx expression, numeric
derivative, minute interval)
972
≥ A 0 8
+
2
,
1
,
5
) ®
The equation is entered in the sequence of
∑ (equation, starting point, ending point
and increment). However, the increment
may be omitted (the increment is set to 1
when omitted).
, ,
, ,
, ,
,
,
, ,
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