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)![]() ![]() ![]() You can put this solution on YOUR website! find the nth term of an A.P. whose (r+1)th term is 4r-3 \n" ); document.write( "------------------------------ \n" ); document.write( "Formula: a(n) = a(1) + (n-1)d \n" ); document.write( "---------------------------------- \n" ); document.write( "Your Problem: \n" ); document.write( "If r+1 = 1, r = 0 \n" ); document.write( "Therefore a(1) = 4*0-3 = -3 \n" ); document.write( "----------------------------------- \n" ); document.write( "If r+1 = 2, r = 1 \n" ); document.write( "Therefore a(2) = 4*1-3 = 1 \n" ); document.write( "----------------------------------- \n" ); document.write( "So d = a(2)-a(1) = 1-(13) = 4 \n" ); document.write( "=----------------------------------- \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 \n" ); document.write( "========================================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |