document.write( "Question 1194958: 2, 4 , 6, 8 , Explicit formula?\r
\n" ); document.write( "\n" ); document.write( "2, 6, 18, 54, Explicit formula?\r
\n" ); document.write( "\n" ); document.write( "3, 6, 12, 24, Explicit formula?\r
\n" ); document.write( "\n" ); document.write( "2, 3, 4.5, 6.75 Explicit formula?\r
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Algebra.Com's Answer #827258 by MathLover1(20850)\"\" \"About 
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\n" ); document.write( "1. \"2\", \"4+\", \"6\", \"8\" ,\r
\n" ); document.write( "\n" ); document.write( "here we need the formula for nth term of an arithmetic progression is \r
\n" ); document.write( "\n" ); document.write( "\"a%5Bn%5D=a%5B1%5D%2Bd%28n-1%29\"\r
\n" ); document.write( "\n" ); document.write( "note that the difference between terms is \"2\"\r
\n" ); document.write( "\n" ); document.write( "In this example we have \"a%5B1%5D=2\" and \"d=2\"\r
\n" ); document.write( "\n" ); document.write( "\"a%5Bn%5D=2%2B2%28n-1%29\"\r
\n" ); document.write( "\n" ); document.write( "\"a%5Bn%5D=2%2B2n-2\"\r
\n" ); document.write( "\n" ); document.write( "\"a%5Bn%5D=2n\" where \"n\"=\"1\",\"2\",\"3\",...\r
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\n" ); document.write( "\n" ); document.write( "2. \"2\", \"6\", \"18\", \"54\",\r
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\n" ); document.write( "\n" ); document.write( "here we need the formula for nth term of a geometric progression which is\r
\n" ); document.write( "\n" ); document.write( "\"a%5Bn%5D=a%5B1%5D%2Ar%5E%28n-1%29\"\r
\n" ); document.write( "\n" ); document.write( "\"a%5B1%5D=2\"
\n" ); document.write( "\"r=6%2F2=3\"\r
\n" ); document.write( "\n" ); document.write( "\"a%5Bn%5D=2%2A3%5E%28n-1%29\" where \"n\"=\"1\",\"2\",\"3\",...\r
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\n" ); document.write( "\n" ); document.write( "3. \"3\",\"+6\", \"12\", \"24\",\r
\n" ); document.write( "\n" ); document.write( " this is also a geometric progression\r
\n" ); document.write( "\n" ); document.write( "\"a%5Bn%5D=a%5B1%5D%2Ar%5E%28n-1%29\"\r
\n" ); document.write( "\n" ); document.write( "\"a%5B1%5D=3%7D%5D%5D%0D%0A%5B%7B%7Br=6%2F3=2\"\r
\n" ); document.write( "\n" ); document.write( "\"a%5Bn%5D=3%2A2%5E%28n-1%29\" where \"n\"=\"1\",\"2\",\"3\",...\r
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\n" ); document.write( "\n" ); document.write( "4.
\n" ); document.write( "\"2\", \"3\",\"+4.5\", \"6.75\"\r
\n" ); document.write( "\n" ); document.write( "rewrite sequence as \"2\", \"3\", \"9%2F2\", \"27%2F4\"\r
\n" ); document.write( "\n" ); document.write( " this is also a geometric progression\r
\n" ); document.write( "\n" ); document.write( "\"a%5Bn%5D=a%5B1%5D%2Ar%5E%28n-1%29\"\r
\n" ); document.write( "\n" ); document.write( "\"a%5B1%5D=2\"
\n" ); document.write( "\"r=%2827%2F4%29%2F%289%2F2%29=3%2F2\"\r
\n" ); document.write( "\n" ); document.write( "\"a%5Bn%5D=2%2A%283%2F2%29%5E%28n-1%29+\"where \"n\"=\"1\",\"2\",\"3\",...\r
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