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LCD
LCD is the abbreviation
for Lowest Common Denominator, the smallest integer, or polynomial
of lowest degree, that is divisible by each denominator.
LCD.
LCM
LCM is the abbreviation
for least common multiple, the smallest number or polynomial of
lowest degree that is divisible by all of a given set of numbers
or polynomials.
LCM
Length
A measure of
distance.
Arc-length
A measure of
an arc of a curve.
Light
year
A unit of distance
in astronomy, equal to the distance travelled by light (in a vacuum)
in one year. 1 year light 
Line
A line is a
set of points in the plane satisfying an equation of the form
ax+by+c = 0 , where a, b, & c are any constants; and
a and b are not both zero. The equation
of a non-vertical line has the following equivalent forms:
Slope-intercept form: y = mx + b , has
slope m and cuts the y-axis at point (0,b)
Point-slope form:  , has slope m passing
through point  .
Intercept-form:  , intercept on x-axis at (a,0)
and the y-axis at(0,b)
linear problems
Line
segment
Any portion
of a line.
Long
division
An algorithm
for division.
Logarithm
For  ,
the log to the base b of x, is the function which associates
to each positive number x, the corresponding exponent y
satisfying  ,
which is equivalent to  ,
i.e., the log to the base b of x is the exponent to which b must
be raised in order to obtain x and thus we have
 .
Logarithmic functions obey certain rules:
The log to the base 10 is called common logarithm and is written
as  .
The log to the base e (2.71828182...) is called natural logarithm
and is written as  .
A Scientific
Calculator provides you common and natural logarithm of almost any
positive number.
Logarithmic
laws
Logarithmic equations
Exponential equations
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