Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 10th
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Find the first term and common difference of the Arithmetic Progressions whose nth term is given below tn = 4 – 7n - Mathematics

Sum

Find the first term and common difference of the Arithmetic Progressions whose nth term is given below

tn = 4 – 7n

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Solution

a = t1 = 4 – 7(1)

= 4 – 7 = – 3

d = t2 – t1

Here t2 = 4 – 7(2)

= 4 – 14 – 10

∴ d = t2 – t1 

= 10 – (– 3) = – 7

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APPEARS IN

Samacheer Kalvi Mathematics Class 10 SSLC Tamil Nadu State Board
Chapter 2 Numbers and Sequences
Exercise 2.5 | Q 3. (ii) | Page 62
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