23 sept 2020
c(n)=− 2 9 (− 3 4 ) n−1 c, left parenthesis, n, right parenthesis, equals, minus, start fraction, 9, divided by, 2, end fraction, left parenthesis, minus, start fraction, 4, divided by, 3, end fraction, right parenthesis, start superscript, n, minus, 1,
lee mas .. 22 sept 2020
21 sept 2020
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