Mathematics After High School

• Solving problems the hard way [Fan, 11/21/1994]
  In my math class the biggest problem for me right now is that when my teacher gives me a problem, I will end up using the harder way to solve it instead of the easy way. Some people can quickly tell what method to use will make the problem a lot easier. Sometimes the problem may be so simple that because of my method of using the hard way, I end up not able to solve it. I need help Dr. Math!!

• Math Applications and the Effect of Technology on Math [Bacia, 3/4/1995]
  I'd like some suggestions for a project I'm doing on math applications that solve problems in the real world. Could you suggest three formulas that could be, or have been used to solve real world problems?

• Space and Aviation in Math [Chang, 3/3/1996]
  I'm doing a research project and my topic is Space and Aviation Math - the math pilots need to know in order to get their wings and any formulas they need to memorize and also any problems that NASA may encounter in space that you need math to solve.

• Slope of 3-Dimensional Equations [Keenan, 11/12/1997]
  Is it possible to find the slope of three-dimensional equations?

• Solving Cubic and Quartic Polynomials [vonBerwick, 04/30/1998]
  Could you describe the algorithms used to solve cubic and quartic polynomials (Tartaglia's Solution)?

• Trigonometry in the Third Dimension [Witty, 04/30/1998]
  How does trigonometry change when we move into the third dimension?

• Parallel Lines in Projective Space [Hernandez, 05/18/1998]
  Do parallel lines intersect at infinity? Is this in projective space?

• Understanding Non-Euclidean Geometry [Nestorowicz, 05/26/1998]
  Can you explain about geometries that are not on the plane? For example, what is a straight line on any surface?

• Understanding Fourth Dimension Figures [Heidi, 07/05/1998]
  Can you help me figure out the equations for fourth dimension figures such as the tesseract and the hypertetrahedron?

• One More Point Than a Line [Pascual, 07/05/1998]
  In terms of 1-1 correspondence, why does a circle have one more point than a line?

• Irrational Decimals [Bennet, 08/04/1998]
  I know the proof stating that 0.9 (repeating) is actually equal to one, but from a representation standpoint are they actually considered to be mathematically equal?

• Countability [Stephanie, 09/09/1998]
  How can I show that the rationals are countable and the irrationals are uncountable?

• Fourier Transforms [Salum, 09/17/1998]
  What is Fourier Transform and what is it used for?

• The Riemann Zeta Function [Bandel, 10/11/1998]
  What are the Riemann hypothesis and the Riemann zeta function?

• Hyperbolic Geometry and the Euclidean Parallel Postulate [Nelson, 01/20/1999]
  When is it true that, given a line L and a point P, there is an infinite number of lines passing through P parallel to L?

• Singularity [Eric, 03/01/1999]
  What is a singularity?

• Public Key Encryption [Jonathan, 03/29/1999]
  Examples and discussion of operations used for encryption, including mod.

• Rope between Two Poles [Klock, 05/04/1999]
  Show that the shortest length of rope occurs when angle PRQ = angle SRT.