Exercices simples et Listes

1+1
[1] 2
23*786
[1] 18078
log(10)
[1] 2.302585
log10(10)
[1] 1
l1<-c(1,7,89)
l2<-c(12,-7,18)
l1+l2
[1]  13   0 107
l1*l2
[1]   12  -49 1602
100+l1
[1] 101 107 189
100+3*l1
[1] 103 121 367
l3<-c(2,6,8,9)
l1+l3
longer object length is not a multiple of shorter object length
[1]  3 13 97 10
1:100
  [1]   1   2   3   4   5   6   7   8   9  10  11  12  13  14  15  16  17
 [18]  18  19  20  21  22  23  24  25  26  27  28  29  30  31  32  33  34
 [35]  35  36  37  38  39  40  41  42  43  44  45  46  47  48  49  50  51
 [52]  52  53  54  55  56  57  58  59  60  61  62  63  64  65  66  67  68
 [69]  69  70  71  72  73  74  75  76  77  78  79  80  81  82  83  84  85
 [86]  86  87  88  89  90  91  92  93  94  95  96  97  98  99 100

Ecrire des Formules Mathematiques

\[ \sum_{i=1}^{n}i=1+2+\cdots+n=\frac{n(n+1)}{2} \]

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