6.40.21 Number of elements equal to a given value: count_eq
The count_eq command counts the number of elements of a list
equal to a given value.
-
count_eq takes two arguments:
-
x, a real number.
- L, a list or matrix of real numbers.
- count_eq(x,L) returns the number of elements of
L which are equal to x.
Example.
Input:
count_eq(12,[2,12,45,3,7,78])
Output: