Summation

If only expr given: sum elements.

# S3 method for yac_symbol
sum(expr, var, lower, upper, ..., na.rm = FALSE)

Arguments

expr

Expression to be summed

var

Variable to sum

lower

Lower limit

upper

Upper limit

...

Not used

na.rm

Not used

Details

Else: sums expr by letting var taking values from lower to upper (potentially Inf)