1.1.1 Excel
Excel :
● , . . ( );
● , , .
4.
. (4)
.
1 f (x) = 0:
. (5)
2 x, [5; 5] 0,5,
. (6)
A1 x =, B1 − f (x) =.
3 A2 5, x.
4 A3 4,5, 0,5 A2.
5 A2 A3:
6 A4 A22.
7 B2 , =. , . . , 18.
8 , Drag - and - Drop.
18
3.
9 . A2, /, 2. A2/2.
10 , Excel ().
11 Excel
LN(), LN − ABS(2).
12 , , 2 Enter.
B2 19,23444.
13 B2 B3B22.
19.
19
, f (x) . , f (x) = 0 x 2,5 3.
.
14 , A18 B18 , , A25 B25 . A25 , A18 A19.
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15 0,0001. / , 0,0001 Enter.
16 B25, f (x) x = 3, .
17 / . , 20.
20
x, $A$25, , ( B25) 0, . . (5), , .
18 OK , 21.
21
, ( 10-6). x = 2,9057 A25, − B25 ( 22), . . , .
22
1.1.2 Excel
Excel . , :
1. () − , ;
2. () − ( );
3. (1; 2) − ;
4. () , ;
5. () ;
6. () .
.
5.
(7)
.
1 A2 =, B1:D3 (7).
2 F2 b =, G1:G3 .
23.
23
3 A5 | | = B5. A, , . . B1:D3. , 24, B1:D3, 234,024 .
24
OK. B5 A: .
4 , ,
|
|
. (8)
5 A8 X = B7:B9, :
6 , = . , . . (8) . 1 (B1:D3), 2 G1:G3, b. , 25.
25
7 OK, Ctrl Shift Enter. 1−2 , . , B7:B9 , . 26.
26
8 A X. , , b .
D7:D9, A X, =(B1:D3;B7:B9) Ctrl Shift Enter.
{=(B1:D3;B7:B9)},
: D7:D9, 27, b.
27
, .