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postnew [5]
3 years ago
7

If a1=4 and an= 3an-1 then find the value of a6.

Mathematics
1 answer:
Romashka [77]3 years ago
4 0

Answer:

a₆ = 972

Step-by-step explanation:

Given a₁ = 4 and a_{n} = 3a_{n-1} , then

a₂ = 3a₁ = 3 × 4 = 12

a₃ = 3a₂ = 3 × 12 = 36

a₄ = 3a₃ = 3 × 36 = 108

a₅ = 3a₄ = 3 × 108 = 324

a₆ = 3a₅ = 3 × 324 = 972

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