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# Notions of Financial Mathematics

Financial mathematics is an essential tool in the life of an administrative assistant. It is used to solve money related problems in time. Financial mathematics deals with calculating present and future values ​​and series of payments, as well as calculating the rate of return on an investment.

## Present Value and Future Value

The concept of present value (PV) and future value (PV) is fundamental in financial mathematics. Present value is the value of a sum of money today. The future value is the value of that same amount at a future date, assuming a given interest rate.

The formula for calculating future value is: EV = PV * (1 + i)^n, where i is the interest rate and n is the number of periods. For example, if you invest \$1,000 today at an interest rate of 5% per year, the future value of that investment in one year would be \$1,000 * (1 + 0.05)^1 = \$1,050.

## Simple Interest and Compound Interest

There are two types of interest: simple and compound. In simple interest, the interest rate is applied only on the principal amount. In compound interest, the interest rate is applied on the principal amount and also on the interest accrued in previous periods.

The formula for calculating simple interest is: J = P * i * n, where P is the principal amount, i is the interest rate, and n is the number of periods. The formula for calculating compound interest is: A = P * (1 + i)^n, where A is the accrued amount.

## Loan Amortization

Another important concept in financial mathematics is loan amortization. Amortization is the process of paying off a loan over time through regular payments. There are several amortization methods, but the most common is the Constant Amortization System (SAC), where the amortization value is constant and interest is decreasing.

The formula for calculating amortization is: A = P / n, where A is the amortization amount, P is the principal amount, and n is the number of periods. The formula for calculating interest is: J = P * i, where J is the interest amount, P is the principal amount, and i is the interest rate.

## Title Discount

Securities discount is a financial operation that consists of anticipating the receipt of an amount that would be received in the future. The amount received is less than the future value as it is discounted at an interest rate.

The formula for calculating the bond discount is: D = EV * i * n, where D is the discount amount, EV is the future value, i is the interest rate, and n is the number of periods.

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## Conclusion

In short, financial math is an indispensable tool for an administrative assistant. It allows you to solve complex money-related problems over time, such as calculating present and future values, calculating simple and compound interest, loan amortization, and bond discounting. Mastering these concepts is critical to being a successful administrative assistant.

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### 4929. Notions of Statistics

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