/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q 12.39. Find the sum:聽鈭慽=1306i鈭�4... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 12: Q 12.39. (page 1183)

Find the sum:鈭�i=1306i鈭�4

Short Answer

Expert verified

The obtained sum is 2670.

Step by step solution

01

Step 1. Given Information.

Consider the given sum:鈭�i=1306i鈭�4

02

simplify the sum.

Express the sum and identify the values.

鈭�i=1306i鈭�4=61鈭�4+62鈭�4+63鈭�4+鈰�+630鈭�4=2+8+14+鈰�+176=a1+a2+a3+鈰�+a30

Thus, the obtained values area1=2anda30=176.

03

Step 3. Find the sum.

Substitute the values in the some formula Sn=n2a1+an

S30=3022+176=15178=2670

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

In the following exercises, write the first five terms of each geometric sequence with the given first term and common ratio.

a1=9andr=2

Find the first term and common difference of a sequence where the third term is 2 and the twelfth term is 鈭�25. Give the formula for the general term.

Write the first five terms of the sequence where the first term is 11 and the common difference is d = 鈭�8.

In the following exercises, write the first five terms of each geometric sequence with the given first term and common ratio.

a1=-4andr=-2

Find the sum:鈭�i=1355i鈭�3
See all solutions

Recommended explanations on Math Textbooks

Theoretical and Mathematical Physics

Read Explanation

Statistics

Read Explanation

Calculus

Read Explanation

Mechanics Maths

Read Explanation

Decision Maths

Read Explanation

Discrete Mathematics

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.