document.write( "Question 1103999: 2. The first three terms of a geometric sequence are
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Algebra.Com's Answer #718739 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
2. The first three terms of a geometric sequence
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document.write( "a1 = ln(x16) = 16∙ln(x) \r\n" );
document.write( "a2 = ln(x8) = 8∙ln(x)\r\n" );
document.write( "a3 = ln(x4) = 4∙ln(x)\r\n" );
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document.write( "r = a2/a1 = 8∙ln(x)/16∙ln(x) = 1/2\r\n" );
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document.write( "First we find:\r\n" );
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document.write( "\"sum%28%282%5E%285-k%29%29%2Ck=1%2Cinfinity%29\"\"%22%22=%22%22\"\"a%5B1%5D%2F%281-r%5E%22%22%29\" \r\n" );
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document.write( "a1 = 25-1 = 24 = 16\r\n" );
document.write( "a2 = 25-2 = 23 = 8\r\n" );
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document.write( "r = a2/a1 = 8/16 = 1/2\r\n" );
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document.write( "\"sum%28%282%5E%285-k%29%29%2Ck=1%2Cinfinity%29\"\"%22%22=%22%22\"\"a%5B1%5D%2F%281-r%5E%22%22%29\"\"%22%22=%22%22\"\"16%5E%22%22%2F%281-1%2F2%29\"\"%22%22=%22%22\"\"16%5E%22%22%2F%281%2F2%29\"\"%22%22=%22%22\"\"16%282%2F1%29\"\"%22%22=%22%22\"\"16%282%29\"\"%22%22=%22%22\"\"32\"\r\n" );
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document.write( "Then \r\n" );
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document.write( "\"sum%28%282%5E%285-k%29%29%2Ck=1%2Cinfinity%29%2Aln%28x%29\"\"%22%22=%22%22\"\"64\"\r\n" );
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document.write( "becomes\r\n" );
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document.write( "\"%2832%29%2Aln%28x%29\"\"%22%22=%22%22\"\"64\"\r\n" );
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document.write( "\"ln%28x%29\"\"%22%22=%22%22\"\"64%2F32\"\r\n" );
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document.write( "\"ln%28x%29\"\"%22%22=%22%22\"\"2\"\r\n" );
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document.write( "raise e to the powers of both sides\r\n" );
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document.write( "\"e%5Eln%28x%29\"\"%22%22=%22%22\"\"e%5E2\"\r\n" );
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document.write( "\"x\"\"%22%22=%22%22\"\"e%5E2\"\r\n" );
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document.write( "Edwin
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