5.1 Sequences, Series, and Arithmetic Progressions

Step 1

Identify the first term $a$ , which is the first number in the list.

Step 2

$a = \frac{3}{2}$ [cite: 783].

Step 3

Calculate the common difference $d$ by subtracting the first term from the second term ( $a_2 - a_1$ ).

Step 4

$d = \frac{1}{2} - \frac{3}{2} = \frac{1-3}{2} = \frac{-2}{2} = -1$ [cite: 783].

Step 5

Verification: Check $a_3 - a_2 = -\frac{1}{2} - \frac{1}{2} = -1$ . It matches.

Final Answer

$a = 3/2, d = -1$

Input

Matrix

2×2

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