Write first four terms of the AP, when the first term $a$ and the common difference $d$ are given as follows:
$a = -1, d = \frac{1}{2}$
Given:
$a = -1, d= \frac{1}{2}$
To do:
We have to write the first four terms of the given arithmetic progression.
Solution:
First term $a_1=a=-1$
Second term $a_2=a_1+d=-1+\frac{1}{2}=\frac{-1\times2+1}{2}=\frac{-1}{2}$
Third term $a_3=a_2+d=\frac{-1}{2}+\frac{1}{2}=0$
Fourth term $a_4=a_3+d=0+\frac{1}{2}=\frac{1}{2}$
Therefore, the first four terms of the given AP are $-1, \frac{-1}{2}, 0, \frac{1}{2}$.
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