THE SUM OF THE FIRST THREE TERMS OF AN ARITHMETIC SEQUENCE IS 15. THE SUM OF THEIR SQUARES IS 147. DETERMINE THE SEQUENCE.EXPLAIN YR REASONING AND JUSTIFY TR WORK.
tn=a+(3-1)d here i plugged in n=3 and Sn=15. what is next eqn?pl. try .thnx.
tn=a+2d
sn=n/2(a+tn) next what to do for sum of squares?
tn=a+(3-1)d here i plugged in n=3 and Sn=15. what is next eqn?pl. try .thnx.
tn=a+2d
sn=n/2(a+tn) next what to do for sum of squares?
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