Questions having to do with financial mathematics. Please note that for questions in quantitative finance, quant.stackexchange.com is perhaps a better site.

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Asset Depreciation - Logarithms

How many years would it take for the value of a car purchased at 30 000 to fall to 15 000 if it depreciates by 15% in the first year and 12% every year after that? This is not actually graded ...
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83 views

Formula for compound interest with N withdrawals

I have a calculator that allows users to see how much they need to save per period (month, year, etc) when putting money into a savings account. There are N withdrawals made in the end, with N ranging ...
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18 views

Financials Maths- Credited Interest

You invest £1,000 in an account for 5 years at 9% pa nominal. How much will you get at the end of the 5 years if the interest is is credited: a) annually; b) 6 monthly; c) 3 monthly; ...
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21 views

Accounting for social costs in a CBA

I am writing a report regarding the cost-benefit analysis of installing a wind turbine. The report takes into account market (i.e.cost of purchasing the turbine) and non-market costs and benefits ...
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53 views

Math / Accounting problem

I have been stuck for over an hour with the following problem. In my textbook the following is written: "Suppose, for example, that Polany Manufacturing Company enters into a long-term lease July 1 ...
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1answer
28 views

finding the optimal decision value for two dependent random events.

I have been struggling with this problem regarding options (bermuda) for some time now. You can exercise this option on two seperate occasions namely at $T_1$ or $T_2$ with a strike price $E$. The ...
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1answer
21 views

Find sweet spot between 'Effect' and 'Resource Consumption'

This question is rather of economical nature. Let's say we have a function $f(x)$ that describes the result of some action depending on the amount of resource used $x$, for example: ...
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1answer
92 views

Text on Probability Theory applied to Actuarial Science

I am a senior undergraduate who has passed the first three actuarial exams on probability (P), financial mathematics (FM), and models for financial economics (MFE). I am working on passing the life ...
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1answer
127 views

Calculating the value of Annuities

Q: Instead of investing $3000$ at the end of $5$ years, and $\$4000$ at the end of $10$ years, Steve wishes to make regular monthly payments that will amount to the same total after $10$ years. ...
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14 views

Finding the compounding period

The future value of a 200 deposit in an account that earns 6.25% annual interest is $272.71 after 5 years. Determine the compounding period for this investment. This is what I have done: $272.71= ...
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109 views

Future Values of Annuities

Michelle has decided to invest $3000 at the end of each year for the next five years in a saving account that pays 8% annually, compounded semi-annually. How much is the annuity worth after 5 years? ...
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123 views

Compound interest problem

Find the present value and accumulated value after 10 years for an income stream with the rate of money flow $f(t) = 200 + 150t$ dollars per year and the rate of interest 12% compounded continously. ...
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44 views

Price of Product

Suppose an item costs $ \$10$. The expected demand for 4 years are: $$ \text{1st year}: 5$$ $$ \text{2nd year}:10 $$ $$ \text{3rd year}:1 $$ $$ \text{4th year}:2 $$ The actual demand is: $$ ...
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Financial Maths question - Calculate number of years over which loan will be repaid

A loan has to be repaid over 3n years, through annual repayment installments of 5000 each at an annual interest rate of 10%. Sum of the Interests paid in the (n+1) and that in the 2n+1 year is 5000. ...
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2answers
142 views

Growth Rate. A precise definition.

Recently I came across a problem (see statement below) growth rate . During my attempts to solve the exercise I concluded that I do not know the meaning of need backup growth rate when this rate is ...
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1answer
61 views

A doubt about Evans and Jovanovic (1989) economic model for entrepreneurs with credit constraints

In Evans and Jovanovic (1989) you will find a model for entrepreneurs with credit constraints. The part that is important for my question follows. Here it is the production function and the income ...
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1answer
91 views

[solved]Compound interest problem

I must admit this is my homework, but I have tried to solve it from many different angles but I can't solve it. The problem is as follows: A person has a 500 dollar debt to be paid in 3 years at an ...
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1answer
64 views

solving apr using binary chop

I need to calculate apr in the uk using this formula http://en.m.wikipedia.org/wiki/Annual_percentage_rate#European_Union Ive been advised to try the binary chop method but I have no idea how to do ...
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1answer
331 views

How to calculate APR using Newton Raphson

I'm have a computer program to calculate apr using Newton Rhapson. I imagine most mathletes can code so i dont imagine the coding being an issue. The solution is based on this initial formula ...
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82 views

Jump diffusion process with sum of Poisson processes a martingale?

Hi Mathematics community, assume you have dynamics of a jump diffusion process consisting of a Brownian motion and a sum of compensated (not necessarily independent) Poisson processes, i.e. ...
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24 views

Weak convergence of discretization scheme with correction

In this article on the Multilevel Monte Carlo method on page 8, http://people.maths.ox.ac.uk/gilesm/files/mcqmc06.pdf, Giles uses a correction term to improve the weak convergence rate of the lookback ...
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1answer
51 views

Find a function that highlights Gamma for short dated fx options and Vega for long dated fx options

I'm new to this and would like to try it out on the above question. A more detailed description is shown below: My professor has asked me to come up with a formula that will highlight, say the 100 ...
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25 views

How to sum correlation, or, calculate correlation of disjointed variables

I'm trying to calculate the correlation of 2 array of variables, but the array is disjointed in the middle - but I'm trying to obtain one correlation coefficient See the excel file I uploaded: ...
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21 views

Average Interest Payment For Specific Period of Ammortization Schedule

I would like to derive an equation that calculates the average interest payment x for an amortized mortgage loan in the first m ...
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1answer
47 views

Using Ito Formula to compute $E[cos(B_t)]$

During the semester my prof (for a basic Mathematical Finance course) gave us some more challenging type questions to think about if we plan to take future courses on the topic. One of the questions ...
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36 views

variance unchanged under subtracting mean - application in portfolio theory

How to get to even the first step? How to derive http://i.stack.imgur.com/R3TIk.png with given http://i.stack.imgur.com/3aLAE.png
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Algebra — Am I doing it right?

Is this correct? $ \frac{1 + 0.05}{1 + x} = \frac{1 + 0.02}{1 + 0.06} $ $\frac{1.05}{1 + x} = \frac{1.02}{1.06} $ $\frac{1.05}{1 + x} = 0.9623 $ $1.05 = 0.9623(1 + x) $ $ \frac{1.05}{0.9623} = ...
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83 views

What does it mean to “pass to the limit” in mathematics?

I've been reading a finance paper and stumbled upon this phrase. What does passing to the limit mean in this context (or overall in mathematics)? Here is an excerpt from the paper: It is ...
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53 views

Questions on share prices of a Company.

Company Z is currently financed solely by common stock and has 1000 outstanding shares with a (time 0) market price of 10 dollars per share. The company’s expected earnings is 1000 dollarseach year ...
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46 views

Discounting Perpetuity Question

"A project pays a dividend of $0.75 next year and then grows at 12% for 3 more years, and then grows at 8% indefinitely thereafter, find PV" Okay so first step is to find the initial value of ...
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1answer
54 views

Help me optimize my work

I am a physician. I am required to work 14 shifts per month. I may work extra shifts for 1400 dollars per shift. In addition, I earn productivity based on a system called RVUs. For every RVU I produce ...
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1answer
172 views

compound interest with geometric series

Were studying geometric sequences in maths and this came up as one of the questions: A mortgage is taken out for 150000 and is repaid annually with 20000 installments. Interest is charged on the ...
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138 views

Compound annual growth rate for negative values

How to compute a compound growth rate when some values are zero or negative? Example 1: A company has 0 money in first year, 5 money in second year and -2 money in third year. All previous year ...
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90 views

How to calculate profit share for this example [closed]

How can we calculate a profit share for Rs. 100,000 that remained in an account for 5 days only. See this question illustration below I was confused about which tags were more appropriate for ...
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142 views

Calculating monthly instalment after down payment

An item is available for $34000\$$ cash or $20000\$$ cash down payment together with $5$ equal monthly instalments. If the rate of interest charged under the instalment plan is $30\%$ per annum, ...
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39 views

Question on Black-Sholes Equation

Consider a call option having a strike price $K$ and exercise time $t$; let $r$ be the nominal rate, $\sigma$ volatility and $S_0$ the underlying asset at $t = 0$. How to show that $C(t, ...
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1answer
46 views

How to calculate the ⌉ operator?

In a book about finance, the following formula appears: $$\large a_{10 \,⌉\, 0.04}$$ What is this ⌉ operator and how to read / calculate it?
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1answer
58 views

Optimal Investment Strategy

I am not sure to solve the following investment problem: I have an investor which receives an income $I_n\ge 0$ at the start of year $n$. The investor chooses a proportion $p_n\in[0,1]$ of this in ...
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243 views

Modelling risk when market making

I'm interested in learning about algorithmic trading, particularly in bitcoin. Looking at this chart, I can see that I could simultaneously offer a bid that was slightly higher than the highest ...
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70 views

Calculating annuity payment

I have a time payment question I'm having trouble with: "Bill would like to save 60000 dollars for a deposit on his first home. He decides to invest his net monthly salary of 3000 dollars in a bank ...
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1answer
77 views

financial maths - payoff options

Consider the payoff of a call option $C=\max\{0,S(1)-K\}$, where $S(1)=S(0)(1+\mu+\sigma_X)$, X has standard normal distribution. Take $S(0)=80$, $\mu=0.3$, $\sigma=0.4$, $K=100$ (strike price). ...
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39 views

Reinvesting the interest (generalized version)

If I deposit \$1 at $t=0$ into an account which credits interest at the end of each year at a force of interest $\delta_t$ (assume it's integrable.) Then, if I reinvest the interest at an annual ...
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1answer
206 views

How to calculate negative profit margin?

I sold a pair of shoes last week a \$150.00. The cost is \$100. My profit margin for last week is 33% (Revenue - Cost) / Revenue What if the customer returned the shoes? Is my profit margin $0$ or ...
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29 views

statistics and financial ratios

Currently i am trying to derive the volatility of a financial ratio. I have calculated the volatility (standard deviation) of both the denominator and numerator however I am running into trouble ...
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39 views

Question on duration matching and reddinggton's immunisation

An insurance company has liabilities of 6 million due in 8 years’ time and 11 million due in 15 years’ time. The assets consist of two zero-coupon bonds, one paying X in 5 years’ time and the other ...
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25 views

Annuity Future Value Factor

Question: How much money will you have at the end of four years if you deposit $1,000 a year (at the end of each year) into a bank account paying 10% interest? We could answer this by calculating ...
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82 views

Stochastic differential for general semimartingale

By using the canonical representation of a semimartingale in Eberlein, Glau and Papapantoleon: "$H = B + H^c + h(x) \ast (\mu − \nu) + (x − h(x)) \ast μ$ where $h = h(x)$ is a truncation ...
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financial mathematics question

An investor is interested in purchasing shares of ABC company. The company pays annual dividends, and a dividend payment of 1.2 per share has just been made. Future dividends are expected to grow at ...
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254 views

Comparing annualised volatility from monthly and annual data

I fear there is a very simple answer to this question and its killing me that I can't see it. I am interested in calculating historical volatility: I have monthly index values starting in Jan 2005 ...
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63 views

Financial mathematic with Feynman-Kac

I have a really big task in financial mathematics and a small part of it (to set up the problem), I need to write a PIDE (the Feynman-kac) where we estimate options with jumps. It is derived from the ...