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# Problem with P/a(i,n)?

could anyone help me rewrite the following formula to i = ...

P = C / (1+i)^n + A * ((1+i)^n-1)/(1+i)^n

pretty pretty plz :D

### 1 Answer

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- vingingeLv 79 years agoFavorite Answer
P = C/(1 + i)ⁿ * (1 + i)ⁿ⁻¹/(1 + i)ⁿ

Note : (1 + i)ⁿ⁻¹/(1 + i)ⁿ = 1/(1 + i)

The P = C/(1 + i)ⁿ * 1/(1 + i) = C/(1 + i)ⁿ+¹

(1 + i)ⁿ+¹ = P/C

1 + i = [P/C]^1/(n + 1)........i.e. the (n + 1)th root of P/C

i = [P/C]^1/(n + 1) - 1

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