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san4es73 [151]
3 years ago
12

PLEASE HELP 25 POINTS

Mathematics
1 answer:
gulaghasi [49]3 years ago
3 0

Hello from MrBillDoesMath!

Answer:

First term =  S(1) = 1

Common difference = S(n+1) - S(n) = 1 -6n

t(n) value:  can't answer this as I don't know what t(n) refers to,



Discussion:

Let S(n)  = 4n - 3n^2  

First term:

S(1) = 4(1) - 3(1)^2 = 4 - 3 = 1


Common difference:

S(n+1) - S(n) =    ( 4(n+1) - 3 (n+1)^2) - (4n - 3n^2)

                    =    (4n + 4 - 3n^2 -6n -3) - 4n + 3n^2                

                            (now cancel common terms)

                   = -6n +  4 - 3 = -6n + 1


S(n+1) = S(n) -6n +  1


Thank you,

MrB

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