Hi!, I'm looking help for this question.

I have the following matrix.

```
t n
0 10000
10 8812
20 7763
30 6841
40 5998
50 5309
60 4669
70 4138
80 3656
90 3235
100 2870
```

¿How can I apply the following equation?

Please, help!

Hi!, I'm looking help for this question.

I have the following matrix.

```
t n
0 10000
10 8812
20 7763
30 6841
40 5998
50 5309
60 4669
70 4138
80 3656
90 3235
100 2870
```

¿How can I apply the following equation?

Please, help!

Are the data in a matrix or data frame? If in a data.frame:

```
library(dplyr)
df <- df %>%
mutate(x = (n - lead(n))/((lead(t) - t) * n))
```

If it's a matrix put `as.data.frame`

before `mutate`

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