induksi matematika 1^2+3^2+5^2+...+(2n-1)^2=n(4n^2-1)/3

induksi matematika

1²+ 3²+ 5²+ ...+ (2n-1)² = n/3 ( 4n² -1)

jika n = k+ 1 --> 1/3k (4 k² - 1) + { 2(k+1) - 1}² = 1/3 (k+1) {4(k+1)² -1 }

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