Question

algebric form of an arithmetic sequece is 2nsquare-n. Find, first term and common difference​

Answer 1

Answer:

Here is ur answer

Step-by-step explanation:

An arithmetic sequence is a string of numbers where each number is the previous number plus a constant, called the common difference. To find the common difference we take any pair of successive numbers, and we subtract the first from the second.

Answer 2

Step-by-step explanation:

$\sf t_{n} = 2 {n}^{2} - n$

$\sf t_{1} = 2 ×{1}^2 - 1 = 1$

$\boxed {\bold{\therefore {\sf { The\:first\:term\:is\:1}}}}$

$\sf t_{2} = 2× {2}^{2} - 2 = 6$

$\sf d = t_{2} - t_{1} = 6 - 1 = 5$

$\boxed {\bold{\therefore {\sf { The\:common\:difference \:is\:5}}}}$

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