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# Igor Z.

\$120/hour

#### Highly Qualified Math, Physics, Stats Tutor: Understanding is the key!

In-person lessons
Background check passed as of 12/3/12
5.0 average from 240 ratings
Basic to Advanced Knowledge and Excellent Communication Skills
— Laurie, Westport, CT on 5/9/16

### \$120/Hour

Response time: 11 minutes

Master's
Master's

### Education

City College of New York

University of Chicago (Master's)

Columbia College Columbia University (Master's)

Private Math, Physics, Statistics Tutoring on ALL LEVELS!

Promise to show “beyond the cookbook” solutions for any problem --- real understanding is the key!

While “cookbook methods” will work on some sample problems, they will not work on real tests!

My real specialty is Advanced Statistics, but I also specialize in pretty much all other areas in Math, Physics and Statistics: Algebra, Calculus, Geometry as well as more advanced areas (like Linear Algebra, Multivariate Calculus, etc.).

In Physics, my specialties include all the areas of AP Physics: Projectile Motion, Newton's Laws, Conservation of Energy, Electricity and Magnetism, Oscillations Equations, Waves, Optics, etc.

In Statistics, we cover Discrete and Continuous distribution, Sampling Distributions (including Confidence Intervals), Null Hypothesis testing, etc.

Here is a nice example of a problem which does not require any advanced math, but still just as interesting:
find: S = 1+ 2 + 3 + … 998 + 999 + 1000?

Solution is replace all the additions with ONE MULTIPLICATION!

My approach is to ensure that the student really understands the subject matter. It's always better to go slow so that the student is not overwhelmed by too much new material. It's also great when a particular problem can be analyzed in a number of different ways which will "converge" on the same answer. In addition, I like to assign some of my own homework which will hopefully make student think about some of the concepts in a "deeper way". I also really like and try to emulate the approach of Gilbert Strang from MIT (great professor of Linear Algebra). His approach is to ask the right questions and guide students towards the logical answers.
Private Math, Physics, Statistics Tutoring on ALL LEVELS!

Promise to show “beyond the cookbook” solutions for any problem --- real understanding is the key!

##### Cancellation
1 hour notice required

Rate is somewhat negotiable depending on the subject with more advanced AP-level subjects (e.g. Calculus, Physics and Statistics) being higher while others could be somewhat lower.

Travels within 15 miles of New Canaan, CT 06840
Background Check: Passed
In-person lessons

#### "Basic to Advanced Knowledge and Excellent Communication Skills"

- Laurie, Westport, CT on 5/9/16

#### "Patient, organized, caring"

- Lize, Waccabuc, NY on 5/3/15

#### "Highly recommended. Excellent tutor for AP Physics. Warm, approachable, and highly reliable"

- Karen, Greenwich, CT on 1/11/15

#### "Great Tutor for Physics"

- Douglas, Weston, CT on 10/19/14

#### "Great tutor, very experienced, a real cheerleader"

- Alison, Norwalk, CT on 5/17/14

#### "Extremely Thorough Tutor!"

- Joanne, Ridgefield, CT on 3/31/14

- Brigitte, Darien, CT on 3/22/14

- Sarah, Northampton, MA on 2/24/14

#### "Excellent teacher"

- John, Mount Kisco, NY on 12/22/13

#### "Highly Recommended!!"

- Ashley, Stamford, CT on 12/10/13

#### "Great tutor!"

- Patrick, Greenwich, CT on 12/8/13

#### "Knowledgable"

- Corinne, Norwalk, CT on 10/29/13

#### "Great tutor"

- Kelly, Norwalk, CT on 9/16/13

#### "GREAT!"

- Marc, Bridgeport, CT on 9/10/13

#### "Igor Z is the best math tutor."

- Jeanne, Stamford, CT on 9/2/13

#### "Great, reliable tutor"

- Matthew, Darien, CT on 7/18/13

#### "Wonderful tutor"

- Jack, Wilton, CT on 6/27/13

#### "Exceptional "Statistics" Tutor!"

- Premila, Westport, CT on 6/26/13

#### "Great teacher, very responsive and eager to accommodate student needs"

- Leonardo, Stamford, CT on 5/29/13

#### "Awesome Tutor!"

- Nicole, Ridgefield, CT on 5/28/13

#### "Great tutor!"

- Pat, Wilton, CT on 3/4/13

#### "Great tutor"

- Johanna, Stamford, CT on 2/12/13

#### "Excellent. Patient, really knows his stuff."

- Christina, Weston, CT on 12/17/12
Math:
ACT Math, Algebra 1, Algebra 2, Calculus, Discrete Math, Econometrics, Geometry, Logic, Prealgebra, Precalculus, Probability, SAT Math, Statistics, Trigonometry
Science:
Physics
Test Preparation:
ACT Math, SAT Math
Computer:
C, C++, Computer Programming, Microsoft Access, Microsoft Excel, SQL
Microsoft Excel

Approved subjects are in bold.

### Approved subjects

In most cases, tutors gain approval in a subject by passing a proficiency exam. For some subject areas, like music and art, tutors submit written requests to demonstrate their proficiency to potential students. If a tutor is interested but not yet approved in a subject, the subject will appear in non-bold font. Tutors need to be approved in a subject prior to beginning lessons.

### Actuarial Science

I am an experienced actuarial science instruction with a master's degree in Financial Math and certification from SOA.

Probability distributions, conditional probabilities, expectations, moment generating functions; we cover it all...

### Differential Equations

Understanding Differential Equations is an integral part of the my Financial Math degree.

In fact, Black Scholes equation is really a partial differential equations which is "one step higher" as compared to the Ordinary Differential Equations.

In addition, I've taken classes have expertise in the following types of ODE's:

--- ODE's with "separable variables"
--- first-order linear ODE's
--- linear homogeneous and non-homogeneous ODE's
--- systems of linear first order ODE's

### Linear Algebra

Linear Algebra is a big part of Risk Management and Portfolio Construction in Financial Math. In addition to my MS in FinMath from University of Chicago, I've also passed the final exam in Advanced Risk and Portfolio Management Bootcamp.

Estimating covariance matrix and diagonalizing it via eigenvectors and their eigenvalues is an exercise which I've done many times in the past.

Another area which comes up many times in Financial Math and inseparably related to Linear Algebra is Regression Analysis, i.e. x_hat = (A_t*A)^(-1) * (A_t*b).

Yet another area of my expertise (and also connected to Financial Math) is the notion of positive definite matrix (like covariance matrix) or positive semi-definite matrix. This is closely related to calculating the variance of the portfolio via Var = x_t*sigma*x (the idea that covariance matrix is positive definite is the same as stating that portfolio could not possibly have negative variance, no matter what the weights of the constituent securities are). This is also related to the idea of symmetric matrices and why their eigenvalues have to be real (easily shown with linear algebra equations).

### MATLAB

I've been using Matlab for over eight years since I started my master's degree in financial math at University of Chicago.

Since then, I've done numerous projects in Matlab both academically and professionally while working as a Desk Quant at Hedge Funds.

In many ways, properly using and understanding Matlab parallels my knowledge of linear algebra.

Once one understands how to set up a problem using vectors and matrices, Matlab makes it easy to "take it from there".

Master's
Master's

### Education

City College of New York

University of Chicago (Master's)

Columbia College Columbia University (Master's)

Basic to Advanced Knowledge and Excellent Communication Skills — I am prepping for a doctoral program in finance. Igor is helping me deepen my shallow knowledge of statistics and calculus, both in terms of the fundamentals and application to finance. As a teacher myself, I can see he is able to adjust his presentation to anyone from a high school beginner to the most advanced. I feel very fortunate to work with a teacher of such high caliber. ...

— Laurie, Westport, CT on 5/9/16

### Hourly rate

Standard Hourly Rate: \$120.00

Cancellation: 1 hour notice required

Rate is somewhat negotiable depending on the subject with more advanced AP-level subjects (e.g. Calculus, Physics and Statistics) being higher while others could be somewhat lower.

### Travel policy

Igor will travel within 15 miles of New Canaan, CT 06840.