a fost răspuns

Este URGENT, va rog
Să se calculeze primii 100 de termeni naturali utilizând structura de control al fluxului while și termenul general: x(indice n)=2ln(x(indice n−1))+x (indice 1 la patrat). Știind că primul termen din șir este egal cu 2, să se introducă valoarea termenului de pe poziția 25.

Imi trebuie termenul 25, valoarea sa

Răspuns :

Andrei750238id

#include <iostream>

#include <cmath>

using namespace std;

int main(){

double x[101];

int i;

x[1] = 2;

for(i=2;i<=100;i++)

       x[i] = 2*log(x[i-1]) + pow(x[1],2);

   for(i=1;i<=100;i++)

       cout << i << " -> " << x[i] << endl;

}

==================================

Termenii in ordine pana la 100 :

1 -> 2

2 -> 5.38629

3 -> 7.36772

4 -> 7.99422

5 -> 8.15744

6 -> 8.19786

7 -> 8.20775

8 -> 8.21016

9 -> 8.21074

10 -> 8.21089

11 -> 8.21092

12 -> 8.21093

13 -> 8.21093

14 -> 8.21093

15 -> 8.21093

16 -> 8.21093

17 -> 8.21093

18 -> 8.21093

19 -> 8.21093

20 -> 8.21093

21 -> 8.21093

22 -> 8.21093

23 -> 8.21093

24 -> 8.21093

25 -> 8.21093

26 -> 8.21093

27 -> 8.21093

28 -> 8.21093

29 -> 8.21093

30 -> 8.21093

31 -> 8.21093

32 -> 8.21093

33 -> 8.21093

34 -> 8.21093

35 -> 8.21093

36 -> 8.21093

37 -> 8.21093

38 -> 8.21093

39 -> 8.21093

40 -> 8.21093

41 -> 8.21093

42 -> 8.21093

43 -> 8.21093

44 -> 8.21093

45 -> 8.21093

46 -> 8.21093

47 -> 8.21093

48 -> 8.21093

49 -> 8.21093

50 -> 8.21093

51 -> 8.21093

52 -> 8.21093

53 -> 8.21093

54 -> 8.21093

55 -> 8.21093

56 -> 8.21093

57 -> 8.21093

58 -> 8.21093

59 -> 8.21093

60 -> 8.21093

61 -> 8.21093

62 -> 8.21093

63 -> 8.21093

64 -> 8.21093

65 -> 8.21093

66 -> 8.21093

67 -> 8.21093

68 -> 8.21093

69 -> 8.21093

70 -> 8.21093

71 -> 8.21093

72 -> 8.21093

73 -> 8.21093

74 -> 8.21093

75 -> 8.21093

76 -> 8.21093

77 -> 8.21093

78 -> 8.21093

79 -> 8.21093

80 -> 8.21093

81 -> 8.21093

82 -> 8.21093

83 -> 8.21093

84 -> 8.21093

85 -> 8.21093

86 -> 8.21093

87 -> 8.21093

88 -> 8.21093

89 -> 8.21093

90 -> 8.21093

91 -> 8.21093

92 -> 8.21093

93 -> 8.21093

94 -> 8.21093

95 -> 8.21093

96 -> 8.21093

97 -> 8.21093

98 -> 8.21093

99 -> 8.21093

100 -> 8.21093

Ceea ce e putin dubios. Sigur asa era formula ?

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