Question

3/2, 1/2, -1/2 and -3/2 are in ap find common difference and the first term

Answer 1

AP = 3/2 , 1/2 , -1/2 , -3/2 , ......

First term = a = 3/2

Common Difference = a2 - a1 =

$\frac{1}{2} - \frac{3}{2} = \frac{1 - 3}{2} = \frac{ - 2}{2} = - 1$

Hope this helps you.....

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Answer 2

answer= -1&3/2

1/2-3/2= -2/2

1/2-(-1/2)= -2/2

the common difference is -2/2=-1

the first term is 3/2