Title 
Description 

Magnitude, Powers of Ten 
Often when we compare the multiplication by various powers of ten we speak of the magnitude of the effect of the multiplication.


Magnitude, Vectors 
The Magnitude of a vector is the length of the vector. We may apply a Pythagorean relation to the perpendicular components of the vector to find the length.


Major Axis 
Certain conic sections have a Major Axis, a line (segment) between vertices.


Matrix 
A rectangular array of numbers is often called a Matrix.


Matrix Addition 
Matrix Addition applies to matrices of like order, the same size.


Matrix Element 
One of the numbers or terms within the rectangular array of terms in a matrix is an Element of the Matrix.


Matrix Multiplication 
To multiply two matrices: the number of columns in the first matrix must match the number of rows in the second matrix.


Maxima 
The plural of maximum. Maxima are "high spots" on the graph of a function.


Maximize 
A process to establish the greatest extent, value, or size possible.


Maximum 
A highest value. A local Maximum is the highest value of a function within some defined neighborhood.


Mean Value Theorem 
Essentially, between any two extremes is an average value.


Measure 
A noun or verb, Measure implies comparison to an established standard.


Measurement 
The result from comparison to an established standard, Measurement may be exact only to an agreedto precision.


Median, Data 
The Median of a set of data is the value in the middle of an ordered or sorted list, with just as many values higher than the Median as lower than the Median.


Median, Trapezoid 
The average of the lengths of the bases of a trapezoid. The Median is a line segment parallel to and equidistant from the bases.


Median, Triangle 
A triangle has three Medians, each a line segment from a vertex to the midpoint of the opposite side of the triangle. Medians are concurrent at the centroid.


Midpoint 
Every line segment (or side of a polygon) contains a point equidistant from the endpoints (or vertices), the Midpoint.


Midpoint Formula 
A simple recipe for finding the Midpoint of a line segment in Cartesian or rectangular coordinates. Add the xcoordinates of the endpoints of the line segment and divide by two for the xcoordinate of the midpoint. The yvalue follows similarly.


Minima 
The plural of minimum. Minima are low points on the graph of a function.


Minimize 
A process to establish the least extent, value, or size possible.


Minimum 
A low point or least value in the neighborhood of the graph of a function is a Minimum, the singular of minima.


Minor Axis 
A line or line segment specific to certain conic sections.


Minute, Angle 
For angles, one Minute is onesixtieth of a degree. One Minute is equivalent to 1/21600 of a circular rotation.


Minute, Time 
Onesixtieth of an hour comprises one Minute of time.


Mixed Number 
We may write an "improper" fraction as a whole number followed immediately with a "proper" fraction. Such a form is termed a Mixed Fraction.


Mode 
While Mode can take on several meanings in mathematics, it generally is used for the value of data with the greatest frequency of occurrence in a list of values.


Modulo N 
Often written as "mod n," it is the remainder after division, and it makes sense in the realm of integers (only).


Modulus 
Most typically it is the length of a vector.


Modus Ponens 
We have "If A, then B." Modus Ponens is a piece of logic that goes like this: if we know A to be true, then we know that B must be true, too.


Modus Tollens 
Begin with "If A, then B." That's a given. We (somehow) know that B is false. We then may infer (but not conclude) that A is false. Modus Tollens is not particularly robust; it is not entirely dependable.


Moment 
Moment takes on many meanings in statistics and physics.


Moment of Inertia 
Each shape or body has an associated Moment of Inertia related to mass distribution and the choice of the axis around which the body is rotated.


Monomial 
A single term.


Mu 
The twelfth letter of the Greek alphabet, Mu is used for both the mean and median in a normal distribution.


Multiplication 
You know, times. The operation to simplify addition of identical values. You should learn your Times Tables, the basic facts of Multiplication.


Multiplicative Inverse 
Another name for Multiplicative Inverse is reciprocal. Reciprocals multiply to one.


Multiplicative Inverse, Matrix 
The Multiplicative Inverse of a Matrix is the matrix for whom the operation of matrix multiplication on another matrix produces the identity matrix. More commonly it is termed simply the Inverse Matrix.


Multivariable 
Having more than one variable. Also multivariate.


Multivariate 
Having more than one variable. Also multivariable.

