: , , .
2.1.
∙ (2 ) 0,5 = 0 ɛ = 0,001.
.
1. . . , , , [a,b] ( , ..).
. (.2.1.).
f(x) = (2 x) (ex) 0,5
x = -4, -3,99..5
.2.1.
: [-3; -2], [1,5; 2,5]. , [1,5; 2,5].
2. .
f(x) = ex ∙ (2 x) 0,5:
3. f(x) [1,5; 2,5]:
f (1,5) = 1,741>0, f (2,5) = -6,591<0
, .
4. (.1.2). dz (xn) ɛ = 0,001. = 8, (ɛ > 8,801∙ 10-4), 8 = 1,927 .
= 0...10
0=
. 2.2.
5. ,
∙ (2 ) 0,5 = 0 [1,5; 2,5] ɛ = 0,001 (. 2.3). 1,927,
.2.3. , .
: , b ; ,
f 1pr(x)
6. hcad
1) = 2
l = root(f(x),x) xl = 1,927
2) Given
(2 x)∙(eX) 0,5 = 0
x2 = Find(x) x2 = 1,927
2.2.
∙(2 ) 0,5=0 [1,5; 2,5] ɛ = 0,001.
.
1. (. . 2.1).
2. .
[1,5; 2,5]. ,
|
|
= 1,5 b = 2,5
f(x) = (2 x)(ex) 0,5
nt = 2.5
= 1,5.
3. (. 2.4).
0 =
. 2.4.
, ,
4 = 1,927 = 4, .. 2,367∙10-5 ˂ 0,001.
4. , ( ).
5. .
, Mathcad , , , solve, Symbolic (. 2.5.)
. 2.5. Symbolic
solve . 2.6.
.2.6. solve
2.3.
ɛ = 0,001.
.
.
1. .
2. = f ().
.
m , f (x) 2 3 .
Fˈ () [1,5; 2,5] , , F () . . 2.7.
1,7408 |
1,4812 |
1,1422 |
0,7099 |
0,1686 |
-0,5 |
-1,3166 |
-2,305 |
-3,4923 |
-4,9093 |
-6,5912 |
F () =
. 2. 7.
[1,5; 2,5]
f (x) :
f (1.5) = 1,5 m ∙1,741;
f (2,5) = 2,5 m ∙(-6,591).
f (x), , 2 , m (. 2.8).
x = 1,5; 1,62,5 F (x) = (2 x)∙ e x 0,5
.2.8. m
Fˈ (x) [1,5; 2,5] (Fˈ (1,5) = 2,241, Fˈ (2,5) = 18,274) , . m , [1,5; 2,5] . 2 (.2.9.).
3 2.2
[1,5; 2,5].
3 : . q 0,877 (. 2.9.).
f (x) = x mF (x)
. 2.9. q
3. .
, , , 0 = 1,5.
ɛ = 0,001 , 1,398∙10-5 (. 2.10).
|
|
q = 0,877
A = 1.398∙10-5
. 2.10.
q
4. (. 2.11).
i = 1..25 x 0 = a z (x) = x mf (x)
xi = z (xi-1)
. 2.11.
24- , ˂ 1,398∙ 10-5 ˂ . , 23 = 1,92718 .
5. , , x = f(x) ( ).
6. (. 2.12).
. 2.12. F (x) = (2 x)∙ e x 0,5
1. ?
2. ?
3. ?
4. ?
5. . .
6. . .
7. .
8. ?
9. x = f(x) [a, b], , ?
10. x = f(x) , , ?
11. : , .
12. ?