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Mapel MatematikaBab Baris dan Deret
Ada 2 kejadian deret tak hingga
• Jatuh (menurun)
• Memantul (naik)
Ketinggian awal saat bola jatuh (a) = 4 m
Ketinggian awal saat bola memantul (a) = 4 x 3/4 = 3 m
S~ = a / (1 - r)
Panjang lintasan saat bola jatuh
= a / (1 - r)
= 4 / (1 - 3/4)
= 4 / (1/4)
= 16 m
Panjang lintasan saat bola memantul
= a / (1 - r)
= 3 / (1 - 3/4)
= 3 / (1/4)
= 12 m
Panjang lintasan total
= saat bola jatuh + saat bola memantul
= 16 + 12
= 28 m