Fins The General Term Of An Arithmetic Sequence Where A3=-1 And A10=18
Fins the general term of an arithmetic sequence where A3=-1 and A10=18
Answer:
An= -64/7+19/7n
Step-by-step explanation:
a10=18
a3=-1
d=(an-ak)/(n-k)
d=(18-(-1))/(10-3)
d=19/7
Find a1
18=a1+(10-1)(19/7)
18=a1+(9)(19/7)
18=a1+171/7
a1=-45/7
General Term
An=a1+(n-1)d
An=(-45/7)+(n-1)(19/7)
An=(-45/7)+19/7n-(19/7)
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