Thornton Township High School is a public high school of the Thornton Twp Hsd 205 School District located in Harvey, IL. It has 1,802 students in grades 9th through 12th. Thornton Township High School is the 116th largest public high school in Illinois and the 2,072nd largest nationally.
Sum of the First n Terms of a Sequence. The sum of the terms of a sequence is called a series. If a sequence is arithmetic or geometric there are formulas to find the sum of the first n terms, denoted Sn, without actually adding all of the terms.um of the First n Terms of a Sequence. The sum of the terms of a sequence is called a series. If a sequence is arithmetic or geometric there are formulas to find the sum of the first n terms, denoted Sn, without actually adding all of the terms.
Terms. Arithmetic Sequence-A sequence in which each term is a constant amount greater or less than the previous term. In this type of sequence, a n+1 = a n + d, where d is a constant. Common Ratio-In a geometric sequence, the ratio r between each term and the previous term. sequence is typically defined recursively by giving the first term, and the formula for any term a n+1 after the first term. Sequence-A function which is defined for the positive integers. Series-A sequence in which the terms are summed, not just listed. Summation Notation-a n = a 1 + a 2 + a 3 + a 4 + ...