Anonymous asked in Science & MathematicsMathematics · 9 years ago

Function for sequence!?

I know writing functions for seqences takes time and practice, but ive been going at this one for some time now and i still dont know how it is done. If someone could please help me solve it and explain your reasoning, that would be amazing.

Write a(subscript)n explicitly as a function of n on the basis of the first five terms a(subscript)n, when N STARTS AT 0. note that it starts out at zero not one.

2/2, 6/4, 12/8, 20/16, 30/32


WAIT. I think i figured it out. Would the answer be (n+1)(n+2)/2^n+1???

1 Answer

  • Paula
    Lv 7
    9 years ago
    Best Answer

    Yes that's right. Bottom line is clearly 2^(n+1), and you've worked out the formula for the top line too.

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