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zlopas [31]
3 years ago
10

Another sequence is defined by a term to term sequence where k and r are constants

Mathematics
1 answer:
kompoz [17]3 years ago
8 0

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U(n + 1) = kU(n) + r

_________________________________

n = 1

U(1 + 1) = kU(1) + r

U(2) = k \times U(1) + r

188 = k \times (37) + r

37k + r = 188 \:  \: \:  (( \alpha ))_________________________________

n = 2

U(2 + 1) = kU(2) + r

U(3) = k \times U(2) + r

943 = k \times (188) + r

188k + r = 943 \:  \:  \: (( \beta ))

_________________________________

188k  + r = 943 \:  \: \:  (( \beta ))

37k + r = 188 \:  \:  \: \:  \:  (( \alpha ))

(( \beta )) - (( \alpha )) =

188k - 37k + r - r = 943 - 188 \\

151k = 755

Divide sides by 151

\frac{151k}{151}  =  \frac{755}{151}  \\

k = 5

Put the value of k in one of the equations to find the r :

37k + r = 188

37 \times (5) + r = 188

185 + r = 188

r + 185 = 188

Subtract sides 185

r + 185 - 185 = 188 - 185

r = 3

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