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Hello, I am a college professor of mathematics and regularly teach all levels from elementary mathematics through differential equations, and would be happy to assist anyone with such questions!

Experience in the area

Over 15 years teaching at the college level.


B.S. in Mathematics from Rensselaer Polytechnic Institute
M.S. (and A.B.D.) in Applied Mathematics from SUNY @ Stony Brook

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    K = Knowledgeability    C = Clarity of Response    P = Politeness
K.F.04/15/17101010Thanks for the follow-up reply!
K.F.04/14/17101010Thanks for the reply!
Gabe04/12/16101010Thank you! Very detailed, much appreciated.
Jeffrey04/06/16101010Great example, even the knuckleheads I work .....

Recent Answers from Abe Mantell

2017-01-30 The number pi:

Hello Tom,    These days, with the Internet, it is easy to get many digits of pi with great reliability.  For example:

2017-01-16 mental math:

Good question!    Here are some places to read about it...

2017-01-07 Determing actual age from apparent age of characters:

Hello Julian,    Without additional info there are literally infinitely many possibilities!  The relationship could be (1) linear, (2) quadratic, (3) cubic, (4) exponential, (5) logarithmic,  (6) power

2016-06-06 help:

Hello Aishwarya,    These websites should help:  http://mathforum

2016-05-23 How to combine two percentage (which may have overlap):

Hello Ahmad,    In this case we can use the well-known formula in probability: P(A or B) = P(A) + P(B) - P(A and B)    However, we only know P(A)=0.5 and P(B)=0.6, we need one more piece of info...either


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