document.write( "Question 214365: find the nth term of an A.P. whose (r+1)th term is 4r-3 \n" ); document.write( "
Algebra.Com's Answer #161936 by stanbon(75887)\"\" \"About 
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find the nth term of an A.P. whose (r+1)th term is 4r-3
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\n" ); document.write( "Formula: a(n) = a(1) + (n-1)d
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\n" ); document.write( "Your Problem:
\n" ); document.write( "If r+1 = 1, r = 0
\n" ); document.write( "Therefore a(1) = 4*0-3 = -3
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\n" ); document.write( "If r+1 = 2, r = 1
\n" ); document.write( "Therefore a(2) = 4*1-3 = 1
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\n" ); document.write( "So d = a(2)-a(1) = 1-(13) = 4
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\n" ); document.write( "Your Problem:
\n" ); document.write( "To find the nth term:
\n" ); document.write( "If r+1 = n, r = n-1
\n" ); document.write( "Therefore a(n) = 4(n-1)-3 = 4n-7
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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