TOPICS
This page:
definitions
Search
Dr. Math
See also the
Internet Library:
dictionaries
HIGH SCHOOL
About Math
Analysis
Algebra
basic algebra
equations/graphs/
translations
linear algebra
linear equations
polynomials
Calculus
Complex Numbers
Calculators/
Computers
Definitions
Discrete Math
permutations/
combinations
Exponents
Logarithms
Fibonacci Sequence/
Golden Ratio
Fractals
Functions
Geometry
Euclidean/plane
conic sections/
circles
constructions
coordinate plane
triangles/polygons
higherdimensional
polyhedra
nonEuclidean
practical geometry
symmetry/tessellations
History/Biography
Interest
Logic
Negative Numbers
Number Theory
Physics/Chemistry
Probability
Projects
Puzzles
Sequences/Series
Sets
Square/Cube Roots
Statistics
Transcendental
Numbers
Trigonometry

Browse High School Definitions
Stars indicate particularly interesting answers or
good places to begin browsing.
 Interpreting Expressions Involving Cosine Squared [03/16/2007]

I don't understand the difference between cos(x)^2, cos^2(x) and (cos
(x))^2. Are they all same?
 Introduction to Quadrants in the Coordinate Plane [02/05/2004]

What is a quadrant? How do you find it? I had to identify 9 ordered
pairs on a graph. Now I need to also name the quadrant each one is in.
 Inverse of a Function vs. Inverse Proportionality [11/20/2002]

Finding the inverse of a function and graphing yields a graph that has
been reflected in the line y = x relative to the function. Inverse
proportionality, however, yields a reciprocal relation graphically.
Why do these two things have similar names yet mean different things?
 Is a Circle a Polygon? [03/07/1999]

A circle is not a polygon.
 Is an Equilateral Triangle Also Isosceles? [02/19/2008]

Can equilateral triangles also be classified as isosceles? In other
words, does an isosceles triangle have exactly two equal sides or at
least two equal sides?
 Is a Sphere 2D or 3D? [8/8/1996]

Is a sphere a two or a threedimensional object?
 Is Kite the True Name? [03/29/2002]

Is kite the true math name for this shape, or is there another?
 Isomorphisms [08/16/1999]

Can you give me an explanation and a nice example of isomorphism?
 Is Zero Considered a Pure Imaginary Number (as 0i)? [12/02/2003]

In the complex plane, zero (0 + 0i) is on both the real and pure
imaginary axes. Is 0 therefore a pure imaginary number as well as a
real number?
 Is Zero Really a Number or Just a Concept? [09/15/2005]

I've been taught that infinity is just a concept, not an actual
number. I'm wondering if the same thing can be said of zero?
 Josephus Problem [04/18/2003]

Every other person at a table is eliminated until there is only one
person left. Who is the survivor?
 The Königsberg Bridge [5/20/1996]

Do you have information on Konigsberg's bridge?
 Lagrange Multipliers [01/08/1998]

I have a problem with Lagrange Multipliers  can you help?
 Larger Than and As Large As [08/01/1999]

If the percussion section has 6 people, does the expression "the brass
section is three times larger than the percussion section" mean that the
brass section is 3*6 = 18 people or 4*6 = 24 people?
 Latin Origins of Trig Functions [11/20/1998]

What are the etymologies of the six trigonometric functions: sine,
cosine, tangent, cosecant, secant, and cotangent?
 Laws of Arithmetic [02/12/1999]

The Distributive Law, Associative Law, Identity, and Commutative
Equations.
 Leg of a Triangle [04/02/2002]

I need to know where the name "leg" of a triangle comes from, or what its
origin is.
 Length of a LightYear [1/31/1996]

How far is a light year in miles or kilometers?
 Limit of x sin(1/x) [04/23/2002]

I assumed from the graph that the function had a limit at x=0 of 0,
but since it involves sin(1/0) I can not prove this using the basic
trigonometric limits (sin x/x and (1cos x)/x), L'Hopital's
rule, or by rearranging the equation. Can you help?
 Linear Algebra  Definition of Orthonormal [10/28/1997]

Show that the transition matrix P from one orthonormal basis to another
is unitary, that is, P*P = I.
 Linear and Board Feet [01/04/1999]

Can you explain the terms linear foot and board foot as they are used in
the lumber industry?
 Linear Footage [04/20/2002]

There is a fence I want to buy, but the ad says '4 foot tall, 50
linear feet. What is a linear foot compared to a regular foot?
 Line of Best Fit [8/1/1996]

Are a bestfit line, a line of best fit, and a fitted line synonymous?
 Line or Ray Longer? [12/11/2001]

Which is longer, a ray or a line?
 Locus [05/03/1999]

What is a locus?
 Mass and Weight [08/16/1997]

Why are mass and weight both measured with the same unit? If weight is
different on the moon and mass is not, what is the difference?
 Mass versus Weight [09/09/99]

Do mass and weight refer to the same thing on earth? Is mass equal to
weight?
 Mass vs. Weight [01/22/1999]

Can you give me a definition of mass and how it differs from weight?
 Mathematical Induction [09/07/1998]

What is mathematical induction? Can you give an example of the ideas of
math induction?
 Mathematical Meaning of Undefined [12/19/2002]

What is the meaning of the word 'undefined' in mathematical terms?
 Mathematical Models [07/17/2002]

What is a mathematical model, and how would it be used?
 Mathematics, Logic, and Intuition [05/27/2003]

How is math related to logic and intuition?
 Math Symbol for C [12/15/1997]

I am puzzled by one symbol of typing math. What does the upper case
letter C mean? As in (2C1) (3C1) / (47C2) = 6/1081.
 Math Symbols [04/07/1997]

What do the common math symbols (backward E, upsidedown A, etc.) mean?
 Matrix Multiplication [09/04/1997]

I am doing a project in Algebra 2 and must research matrix
multiplication.
 The Meaning of Locus [03/04/2003]

What is the locus of points equidistant from two parallel lines 8
meters apart?
 Meaning of 'ominoe' [11/07/2001]

We are drawing pictures of dominoes, triominoes, tetrominoes, and
pentominoes. What is the meaning of the root "ominoe"?
 The Meaning of 'Or' in Logic Statements [12/19/2003]

If a logic statement says, 'James is taking fencing or algebra,' does
that mean he is taking one class or the other, or could he be taking
both of them?
 Meaning of R++ [9/12/1996]

What do the symbols R_{+} and R_{++} mean?
 The Meaning of Space [07/23/1997]

Is the term 'Space' a mathematical object? I have seen it in "Vector
Space," "Banach Space," and "Hilbert Space," but are they the same thing?
Page: [<prev]
1
2
3
4
5
6
7
8
9
[next>]
