81,27,9,3,_,_

81,27,9,3,_,_

Express the sum using summation notation. Thank you.

The possible answers are: 1595 800 695 1840 1595 800 695 1840

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First term of sequence is 3 and the common difference is 5. The nth term is the first term in this sequence >1000. Find value of n.

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We have to recurrence relation an = 2an-1 - an-2. Find a2 and a3 if: a) a0 = 1 and a1= 1? b) a0 = 0 and a1 = 0?

a_1= 256, a_(n+1)= √(a_

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