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!!!CALCULUS!!! 20 POINTS Find the first term of the arithmetic sequence in which a_27=-1/2 and the common difference is 2. 103/2 -105/2 -103/2 111/2

!!!CALCULUS!!! 20 POINTS Find the first term of the arithmetic sequence in which a_27=-1/2 and the common difference is 2. 103/2 -105/2 -103/2 111/2
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1 vote
!!!CALCULUS!!! 20 POINTS

Find the first term of the arithmetic sequence in which a_27=-1/2 and the common difference is 2.
103/2
-105/2
-103/2
111/2

User Kukudas
by
8.2k points

1 Answer

0 votes
-1/2=a_1+26*2
-1/2=a_1+52
a_1= -1/2-52
a_1= (-1-104)/2
a_1= -105/2
User Robert Hadsell
by
8.1k points
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