Use the formula for the sum of the first n integers to evaluate the sum given below. 3+ 6+ 9 + 12 + ··· + 120 7257 ×

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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i used the formula. im not sure on how i got it wrong. 

Use the formula for the sum of the first n integers to evaluate the sum given below.
3+ 6+ 9 + 12 + ··· + 120
7257
×
Transcribed Image Text:Use the formula for the sum of the first n integers to evaluate the sum given below. 3+ 6+ 9 + 12 + ··· + 120 7257 ×
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