document.write( "Question 983172: Find the nth term of the harmonic sequence
\n" ); document.write( "1,4/5,2/3,4/7,... n=12
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Algebra.Com's Answer #604255 by MathLover1(20850)\"\" \"About 
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\n" ); document.write( "First find a formula for the general term.\r
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\n" ); document.write( "\n" ); document.write( "\"1\",\"4%2F5\",\"2%2F3\",\"4%2F7\",... \"n=12\"\r
\n" ); document.write( "\n" ); document.write( "you can write first term \"1\" as \"4%2F4\" and third term \"2%2F3\" as \"2%2F6\", so your sequence will be:\r
\n" ); document.write( "\n" ); document.write( "\"4%2F4\",\"4%2F5\",\"4%2F6\",\"4%2F7\"\r
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\n" ); document.write( "\n" ); document.write( "in your case, numerators are same and equal to \"4\"
\n" ); document.write( "as denominators, you have \"4%7D%7D%2C+%7B%7B%7B5\", \"6\", \"7\",...\r
\n" ); document.write( "\n" ); document.write( "to get first term\r
\n" ); document.write( "\n" ); document.write( "\"4%2F%28n%2Bd%29=1\" where \"n=1\" you have \"4%2F%281%2Bd%29=1\"=> \"d\" must be equal to \"3\"
\n" ); document.write( "\"4%2F%281%2B3%29=1\"=>\"4%2F4=1\"\r
\n" ); document.write( "\n" ); document.write( "so, general formula will be:\r
\n" ); document.write( "\n" ); document.write( "\"a%5Bn%5D=+4%2F%28n%2B3%29\" (for all terms given) where \"n\"=\"1\",\"2\",\"3\",.....\"n\"\r
\n" ); document.write( "\n" ); document.write( "\"a%5Bn+%5D=+4%2F%28n%2B3%29\" ...........if \"n=12\" we have\r
\n" ); document.write( "\n" ); document.write( "\"a%5B12+%5D=+4%2F%2812%2B3%29\"\r
\n" ); document.write( "\n" ); document.write( "\"a%5B12+%5D=+4%2F15\"\r
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