document.write( "Question 967249: I'm so confused. Can someone pretty please help with these?
\n" ); document.write( "For the following sequences calculate the indicated term:
\n" ); document.write( "a) an=(-1)^n(3n+2),a5 (first n and the 5 are subscript)
\n" ); document.write( "b) an=lne^n,a13 (first n and 13 are subscript)
\n" ); document.write( "c) a1=1,an+1=2an+1,a4 (the first 1, the n+1 and 4 are subscript)
\n" ); document.write( "I really appreciate help on this one!! \n" ); document.write( "
Algebra.Com's Answer #591353 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "For the following sequences calculate the indicated term:\r\n" );
document.write( "a) \"a%5Bn%5D=%28-1%29%5En%2A%283n%2B2%29\", \"a%5B5%5D\"\r\n" );
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document.write( "All you do is substitute 5 for n and simplify\r\n" );
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document.write( "\"a%5Bn%5D=%28-1%29%5En%2A%283n%5E%22%22%2B2%29\"\r\n" );
document.write( "\"a%5B5%5D=%28-1%29%5E5%283%285%29%5E%22%22%2B2%29\"\r\n" );
document.write( "\"a%5B5%5D=%28-1%29%2815%5E%22%22%2B2%29\"\r\n" );
document.write( "\"a%5B5%5D=%28-1%29%2817%29\"\r\n" );
document.write( "\"a%5B5%5D=-17\"\r\n" );
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document.write( "b) \"a%5Bn%5D=ln%28e%5En%29\", \"a%5B13%5D\"\r\n" );
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document.write( "ln(en) simplifies to just n, so the\r\n" );
document.write( "problem is only\r\n" );
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document.write( "\"a%5Bn%5D=n\", \"a%5B13%5D\"\r\n" );
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document.write( "Just substitute 13 for n and have \r\n" );
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document.write( "\"a%5B13%5D=13\" \r\n" );
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document.write( "c) \"a%5B1%5D=1\", \"a%5Bn%2B1%5D=2a%5Bn%5D%2B1\", \"a%5B4%5D\" \r\n" );
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document.write( "This is a recursive formula, not a general formula,\r\n" );
document.write( "like the other two.  \r\n" );
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document.write( "1. You are given a1.\r\n" );
document.write( "2. You use n=1, a1 and the formula to find a2.\r\n" );
document.write( "3. You use n=2, a2 and the formula to find a3.\r\n" );
document.write( "4. You use n=3, a3 and the formula to find a4.\r\n" );
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document.write( "1. \"a%5B1%5D=1\"\r\n" );
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document.write( "2. Substitute 1 for n and 1 for a1, and\r\n" );
document.write( "simplify:\r\n" );
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document.write( "\"a%5Bn%2B1%5D=2a%5Bn%5D%2B1\" \r\n" );
document.write( "\"a%5B1%2B1%5D=2a%5B1%5D%2B1\"\r\n" );
document.write( "\"a%5B2%5D=2%281%29%2B1\"\r\n" );
document.write( "\"a%5B2%5D=2%2B1\"\r\n" );
document.write( "\"a%5B2%5D=3\"\r\n" );
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document.write( "3. Substitute 2 for n and 3 for a2, and\r\n" );
document.write( "simplify:\r\n" );
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document.write( "\"a%5Bn%2B1%5D=2a%5Bn%5D%2B1\"\r\n" );
document.write( "\"a%5B2%2B1%5D=2a%5B2%5D%2B1\" \r\n" );
document.write( "\"a%5B3%5D=2%283%29%2B1\"\r\n" );
document.write( "\"a%5B3%5D=6%2B1\"\r\n" );
document.write( "\"a%5B3%5D=7\"\r\n" );
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document.write( "4. Substitute 3 for n and 7 for a3, and \r\n" );
document.write( "simplify:\r\n" );
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document.write( "\"a%5Bn%2B1%5D=2a%5Bn%5D%2B1\"\r\n" );
document.write( "\"a%5B3%2B1%5D=2a%5B3%5D%2B1\" \r\n" );
document.write( "\"a%5B4%5D=2%287%29%2B1\"\r\n" );
document.write( "\"a%5B4%5D=14%2B1\"\r\n" );
document.write( "\"a%5B4%5D=15\"\r\n" );
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document.write( "Edwin
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