Question

if a1 =- 1 then find a2 a3 in an=an-1/n+2, n>1 n € n

Answer 1

Answer:

a2=-1/4

a3=-1/20

Step-by-step explanation:

a1=-1

an=an-1/n+2

a2=a1/2+2

a2=-1/4

a3=a2/3+2

a3=(-1/4)/5

a3=-1/20

Answer 2

Concept:

We can find the terms by putting the value of n in the expression.

Given:

We are given that

a₁ = - 1

aₙ = aₙ₋₁ / (n + 2)

Find:

We need to find:

a₂ and a₃

Solution:

For a₂, n = 2:

We get that:

a₂ = a₂₋₁ / n + 2

a₂ = a₁ / (n + 2)

a₂ = -1 / 2 + 2

a₂ = - 1 / 4

For a₃, n = 3:

We get that:

a₃ = a₃₋₁ / (n + 2)

a₃ = a₂ / (n + 2)

a₃ = (- 1/ 4) ( 3 + 2)

a₃ = -1 / 20

Therefore, we get the value for a₂ as - 1 / 4 and a₃ as -1 / 20,

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