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Paul Klarreich

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Expertise

I can answer questions in basic to advanced algebra (theory of equations, complex numbers), precalculus (functions, graphs, exponential, logarithmic, and trigonometric functions and identities), basic probability, and finite mathematics, including mathematical induction. I can also try (but not guarantee) to answer questions on Abstract Algebra -- groups, rings, etc. and Analysis -- sequences, limits, continuity. I won't understand specialized engineering or business jargon.

Experience in the area

I taught at a two-year college for 25 years, including all subjects from algebra to third-semester calculus.

Education/Credentials

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Average Ratings

  • Rating N/A
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  • Number of Questions (in Past 24 Hours) 1
  • Max Questions to be Asked (in 24 Hour Period) 3
  • Total Questions (since joining AllExperts) 1582
  • Volunteer Since 2005-09-24
  • Prestige Points 13406

Recent Answers from Paul Klarreich

2009-11-23 Third degree equation:

Questioner: grull Country: Hungary Category: Advanced Math Subject: third degrees equation Question: Hello! My problem is the following equation: 8x^3-6x+1=0 Coud you help me to solve

2009-11-23 Logical Maths:

Questioner: Rashid Question: When two positive or negative directed numbers are multiplied then answer is positive, e.g (+3)x(+7) = +21 and (-3)x(-7) = +21 What is logic behind it? or what is another

2009-11-22 Homogeneous functions, L’Hôpital’s rule:

Questioner: Geli Country: United States Category: Advanced Math Private: No Subject: Homogenous, L’Hôpital’s rule Question: Dear Paul, please help me how to solve following problems. Thanks:)

2009-11-22 Integral, maximum or minimum:

Questioner: Geli Country: United States Category: Advanced Math Private: No Subject: Integral, maximum or minimum Question: Dear Paul, please help me with the following problems. Thank you so

2009-11-21 Logarithm and exponent properties.:

Questioner: Brad Country: United States Category: Advanced Math Private: No Subject: Helping daughter with log problem Question: The problem is "Rewrite each expression as a sum or difference

 

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