1. **State the problem:**
Princess deposited 195800 in a savings account paying 2% interest compounded daily (365 days). We need to find the compound interest earned and the future value after 5 years.
2. **Formulas and definitions:**
- Interest rate per period: $r = \frac{i}{n}$ where $i$ is the annual interest rate and $n$ is the number of compounding periods per year.
- Number of periods: $N = n \times t$ where $t$ is the number of years.
- Future value formula for compound interest: $$A = P \left(1 + r\right)^N$$
- Compound interest earned: $$CI = A - P$$
3. **Identify given values:**
- Principal $P = 195800$
- Annual interest rate $i = 0.02$
- Compounding frequency $n = 365$
- Time $t = 5$ years
4. **Calculate interest rate per period:**
$$r = \frac{i}{n} = \frac{0.02}{365}$$
5. **Calculate number of periods:**
$$N = n \times t = 365 \times 5 = 1825$$
6. **Calculate future value:**
$$A = 195800 \left(1 + \frac{0.02}{365}\right)^{1825}$$
7. **Calculate compound interest:**
$$CI = A - 195800$$
8. **Evaluate the expressions:**
Calculate $r$:
$$r = \frac{0.02}{365} \approx 0.00005479$$
Calculate $A$:
$$A = 195800 \left(1 + 0.00005479\right)^{1825}$$
Calculate the base:
$$1 + 0.00005479 = 1.00005479$$
Calculate the power:
$$1.00005479^{1825} \approx e^{1825 \times 0.00005479} = e^{0.1} \approx 1.10517$$
Calculate $A$:
$$A = 195800 \times 1.10517 \approx 216320.23$$
Calculate compound interest:
$$CI = 216320.23 - 195800 = 20520.23$$
**Final answers:**
- Compound interest earned: 20520.23
- Future value: 216320.23
9. **Compounding frequency:**
The compounding frequency is daily, which means interest is compounded 365 times per year.
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