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Is this acceptable in recursive formulas? 
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#1
Jan1912, 05:09 PM

P: 15

Say for the recursive formula 2, 5, 9, 19 , 37...
Instead of writing it as a_{n} = a_{n1} + * 2 a_{n2} can you write it as: a_{n} = 2a_{n} + (1)^{n} Just double checking. I encountered this earlier helping someone and I haven't done recursive formulas in a while.. 


#2
Jan1912, 07:53 PM

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P: 6,953

I think you meant a_{n} = 2a_{n1} + (1)^{n}
Sure. Your formula is the same as a_{n} = a_{n1} + (1)^{n} + a_{n1} = a_{n1} + (1)^{n} + 2a_{n2} + (1)^{n1} = a_{n1} + 2a_{n2} 


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