Math / Science

The Math / Science topic primarily includes discussions of mathematics, physics, statistics and economic analysis, but also biology, chemistry and other sciences.

Dear experts,

I am preparing for Financial Engineering.

Can any of the experts recommend a book on Probability theory which will support the understanding required for stochastic calculus.

Thank you

The last 1 year, I've got 7 burnt LED drivers  (4W-24W) from unbranded (made in
China) & one even cause total power trip in the house : url above is one of them.

So far the LED lights are Ok, it's only the drivers.  A contractor recommends
OSRAM.  Would the following driver support all my drivers (that ranges from
4-24W) as it states 2-30W : I plan to replace all of them with reliable one:

Have also seen cases the LED light flickers or dimmed to a quarter of the brightness
& replacing the driver helped always.
A lawyer advised me and my spouse to write separate wills :
as the will is charged at a fee per will, I'm trying to establish if this is a general
practice out there & the reasons for it : if it's one joint will, it will be charged
for one will's fee.

Reason was the lawyer wants to customize it to meet our special-needs
(intellectually disabled who can't live on his own) kid but by making the
wills separate, I'm curious how this helps
Which industries use the "end of period" and "beginning of period" options in the PMT, FV, PV and other financial functions.
When I've taken out a personal loan at the bank, I was never asked "Would you like to pay at the end of the month? or would you like to pay at the beginning of the month?"

Which types of transactions?  Is it non-USA entities?  Is it real estate? Asset-based loans?
Can anyone point to an article, blog post, or video that discusses who uses the last option in these financial functions.
Hello Experts,
This is a math type of question. If I have a set of data for 100 people that falls into four income brackets, but one of the groups is 'No Income Data', what is the method for calculating (projecting) the income bracket for the 15 people with 'No Data' based on the percent/totals of the 3 groups that do have data. For instance, if I have:

 25 people with an income   less than $15,000          (25%)
 50 people with an income   $15,000 - $25,000          (50%)
 10 people with an income   greater than $25,000    (10%)
 15 people with                       no income data             (15%)

Thank you for your help with this.
I'm looking for CISM (Cert Info Security Mgt) exam dumps :
anyone can point me to where to get.

Used to have VMWare & Cisco dumps but can't locate them.
Is there any way to draw the Radius "R4" with only the information supplied
Without getting side-tracked by arguments of whether 0.9 recurring can ever equal 1, is there an accepted mathematical expression for the difference between 0.9r and 1?
Discuss the contributions to education of the following: Socrates, Plato, Aristotle, John Dewey, B.F. Skinner
I am considering whether the starting position for the pattern vis-a-vis the searched text,  (i.e. the LAST CHARACTER of the pattern be aligned) ought to initially coincide with the first appearance of that LAST CHARACTER in the searched Text, *provided that appearance is equal to or more than the length of the Pattern*, since otherwise the index would have occurred too early in the sequence to be valid.

Consider this illustration from the B-M paper :

Search starting alignment
The B-M algo would 'mismatch' the final T from the 'pat' with the F from the 'string', and move the pattern past the F, to align the A with the I. Whereas the first contending T in the pattern and the string is at index 17 in the string, rather than the standing comparison being done at index 7.
Dear experts,

I was looking for a website which will provide/assist me in solving problems covering mathematics courses at high-school level and Undergrad level.

I initially took a one-month subscription of the following website:

In response to one of the earlier questions posted in this forum, I saw references to the following option:

can any of the experts comment on the above two or please guide me to a suitable website/app

Thank you
Dear experts

I am preparing for Financial Engineering/stochastic calculus.

In the high-school level books I am referring to, the 'application of derivatives chapter' covering:

errors and approximations
Geometrical interpretation of the derivative
Lenth of tangent, normal, subtangent and subnormal
Angles between two curves and condition for orthogonality of curves
Derivative as a rate of change
Rolle's Theorem and Lagrange's theorem
Increasing and decreasing function
Global extreme and local extreme value
First derivative test/second derivative
Maxima and minima

I guess the above topics are explained with a view that students will further pursue engineering background.

CAn any of the experts please recommend if there is any book which focuses the application of the derivatives for those pursuing stochastic calculus or financial engineering.

I have purchased the following books and expect its delivery in two weeks time.

1. Solutions Manual - A Linear Algebra Primer for Financial Engineering... $40.00
Qty: 1
Sold By: Services, Inc.
2. A Linear Algebra Primer for Financial Engineering: Covariance... $62.00
Qty: 1
Sold By: Services, Inc.
3. Solutions Manual - A Primer For The Mathematics Of Financial... $40.00
Qty: 1
Sold By: Services, Inc.
4. A Primer For The Mathematics Of Financial Engineering, Second Edition... $54.43

If the  above books covers the application of …
Dear experts,

I am doing the heavy lifting for Financial Engineering. As I am beginner in the Mathematics.
Can anyone please help me understand if the below book is good for gaining good understanding to the extent required for Financial Engineering or Stochastic Calculus? Or will this be an overdose.
I am not sure if this book was recommended to me by some expert here or I happened to collect this information from some external source.

Kindly advice.
Schaum’s outline series
Title: Theory and practice of Set theory and Related Topics
Author: Seymour Lipschutz
Topics covered: Functions, Relations, Cardinal and Ordinal Numbers, Transfinite Induction, Zorn’s LEMMA, Algebra of propositions, Boolean Algebra
Dear experts,

I have now started classes for Financial Engineering.

I am not clear about the breadth /depth of topics in Vector Algebra required for Financial Engineering. I understand vectors also include vector spaces, vector matrix and vector calculus.

I have the following list of topics under Vector from high-school.

Can anyone please highlight which of these topics are required for Financial Engineering. Alternatively, if any of the experts have a list or an url which identifies the topics, please forward me.

I have done search in quantnet and other google results but could not get any clarity.

4. Addition of Vectors:
4.1 Vectors as a triad of real numbers.
4.2 Classification of vectors.
4.3 Addition of vectors.
4.4 Scalar multiplication.
4.5 Angle between two non zero vectors.
4.6 Linear combination of vectors.
4.7 Component of a vector in three dimensions.
4.8 Vector equations of line and plane including their
4.9 Cartesian equivalent forms.

5 Product of Vectors :
5.1 Scalar Product - Geometrical Interpretations -
orthogonal projections.
5.2 Properties of dot product.
5.3 Expression of dot product in i, j, k system - Angle
between two vectors
5.4 Geometrical Vector methods.
5.5 Vector equations of plane in normal form.
5.6 Angle between two planes.
5.7 Vector product of two vectors and properties.
5.8Vector product in i, j, k system.
5.9Vector Areas.
5.10Scalar Triple Product.
5.11Vector equations of plane in different forms,…
Dear experts,

I understand 'e' as in Log number to the base 'e' is used in a lot of scientific calculations.

CAn anyone please guide me on notes or (youtube) videos which explain its application in the field of Financial Engineering (like stochastic calculus)

I want to benefit of the experts' prior knowledge or experience.

Thank you
What is a Jeffrey fluid or a Jeffery flow or Jeffrey fluid flow or whatever. This is part of an assignment and try as I may, I cannot find what this is.
I have plotted sales revenue graphs on all the items under a certain brand.

From the graphs that I have plotted, can you help me identify any patterns or trends in the sales of each of the items under the brand? :)

I have one problem with my circuit . I am trying to create an oscillator with dc current because I need an external clock for an application . I have connected a  capacitor of 480 μF in series with the 5v pin . I have also connected an 2.2 Ohm resistor in series with my capacitor and the capacitor is connected to a digital pin .The digital pin is set programmatically to input.The time for the capacitor to be charged is :

V^2 /R *t = 1/2 C*V^2 so the formula takes the form of 1/R*t = 1/2 C => t = 1/2RC

Here's my code:void setup() {
  // put your setup code here, to run once:


void loop() {
  // put your main code here, to run repeatedly:

Serial.println("Current present");

It should show me the message every 0.5 seconds but instead it shows me this message every 10 milliseconds.What am I doing wrong?
Dear experts,

Can anyone point to any online site which can has c/c++/Python programs written/used for Financial Engineering.

The idea is show the content/calculations involved in Financial Engineering to my tutor who can then teach me leading to building my fundamentals.

My tutors teaches for Engineering college students and may not have the orientation of Financial Engineering programming features/calculations.

Kindly guide.

Thank you
EE Pros,

Can someone help me with solving the reverse equation for the formula in Cell F8?

Thank you in advance.

Dear experts,

From my long-list of several questions I have been posting, this is yet another one.

In my game to get ready for stochastic calculus for Financial Engineering, I am engaging a lecturer for Real analysis.

Now can i request any of the experts to list me the details of the topics in the Real analysis required to cover Stochastic calculus. Also if you can indicate which of these require a mastery, so that I can handle Stochastic calculus reasonably well.

The purpose of this question is, I am not sure if the lecturer will have the focus/background of Financial Engineering.

Kindly guide me.

Thank you
Dear experts,

I am preparing for stochastic calculus.

I am to start from the very basic building each and every and block, one at a time.

In this process, I am identifying the chapters topics which are required for set theory.

Can someone guide me to a material/book/online tutoring which imparts this prerequisite knowledge.

Kindly request you to be patient with me as I have already posted several questions with regard to stochastic calculus.

Kindly help.

Thank you.
Dear experts,

I want to study learn Stochastic calculus with good level of understanding.

As we speak I have to covered Trigonometry functions, inverse, triangle (properties) and hyperbola.

Can any of the experts comment if stochastic calculus requires very good knowledge and depth of Trigonometry. If it is not required then I can focus on other areas required for stochastic calculus.

Kindly guide.

Thank you
Dear experts,

I am planning to learn stochastic calculus from Shreve book.

I will be starting studying this topic in a couple of months.

Can any of the experts guide me to a (any) website(s) (free or paid), where these underlying mathematical functions are explained.

I believe I have the financial product knowledge with my CFA background.

Kindly guide.

Thank you