what is the value of n if the sum of the consecutive odd integers from 1 to n equals 169 ?
# of terms = ( n - 1 / 2 ) + 1 { ( last term - first term ) / 2 + 1 | sum = ( 1 + n ) / 2 * # of terms = ( n + 1 ) ^ 2 / 4 = 169 n + 1 = 13 * 2 n + 1 = 26 n = 25 . answer : b
add(subtract(multiply(sqrt(169), const_2), multiply(const_2, 1)), 1)