Question: prove by induction 2^2 + 4^2 + 6^2 + ... + (2n)^2 = (2n)(2n+1)(2n+2)/6 ANSWER we will use induction on n base case : n=1 we have, 2^2 = 2*3*4/6 = 4 which is true inductive hypothesis let it be true for n = k i.e., 2^2 + 4^2 + ... + (2k)^2 = [(2k)(2k+1)(2k+2)]/6 inductive case let n = k+1 then we have 2^2 + 4^2 + .... + (2k)^2 + (2(k+1))^2 = [(2k)(2k+1)(2k+2)]/6 + (2k+2)^2 =(2k+2)*[(2k)(2k+1)/6 + (2k+2)] =(2k+2)*[ (4k^2+2k)/6 + (12k + 12)/6 ] =(2k+2)*[ (4k^2+14k+12)/6 ] = =(2k+2)*[(2k)(2k+1)/6 + (2k+2)] =(2k+2)*[ (4k^2+2k)/6 + (12k + 12)/6 ] =(2k+2)*[ (4k^2+14k+12)/6 ] = (2k+2)*[ (4k^2 + 8k + 6k + 12)/6 ] = (2k+2)*[ (4k(k + 2) +6(k+2))/6 ] = (2k+2)*[ (4k+6)(k+2)/6 ] = (2k+2)*[ 2 (2k+3)(k+2)/6 ] = (2k+2)*[ (2k+3)*2*(k+2)/6 ] = (2k+2)*[ (2k+3)(2k+4)/6 ] = [(2*(k+1))(2*(k+1)+1)(2*(k+1)+2)]/6 replacing k+1 by m, we get replacing k+1 by m, we get [(2*m)(2*m+1)(2*m+2)]/6 this completes our proof b...
https://www.chegg.com/homework-help/12-ft-long-15-kw-electrical-resistance-wire-made-01-diameter-chapter-19-problem-51p-solution-9781259160240-exc
ReplyDeletehttps://www.chegg.com/homework-help/earth-embankment-shown-figure-1044-determine-stress-increase-chapter-10
ReplyDeletehttps://www.chegg.com/homework-help/earth-embankment-shown-figure-1044-determine-stress-increase-chapter-10-problem-14p-solution-9781337516877-exc
ReplyDeletehttps://www.chegg.com/homework-help/refer-figure-1047-flexible-rectangular-area-subjected-unifor-chapter-10-problem-17p-solution-9781337516877-exc
ReplyDeletehttps://www.chegg.com/homework-help/questions-and-answers/hydroponic-garden-uses-10-m-long-perforated-pipe-system-shown-deliver-water-20-degrees-cel-q4815624
ReplyDeletehttps://www.chegg.com/homework-help/questions-and-answers/82-single-phase-transformer-rated-110-33-kv-50mva-overload-capability-120--110-kv-side-tap-q34022857
ReplyDeletehttps://www.chegg.com/homework-help/questions-and-answers/two-infinite-parallel-planes-carry-equal-opposite-uniform-charge-densities-plusminus-sigma-q14568421
ReplyDelete