... integer
p and q (q ≠ 0). It is only the rational numbers that can be written in the form of finite
(terminating) or periodic (recurring) decimals (e.g., 1/8 = 0.125 and 1 /6 = 0. 166 66 ).
Any integer ... m/n,wherem and n are natural numbers:
a
p
= a
m/n
=
n
√
a
m
, a ≥ 0.
6 ARITHMETIC AND ELEMENTARY ALGEBRA
1.2.2. Addition and Multiplication of Numbers
1.2.2-1. Addition of...
... 1).
References for Chapter 2
Abramowitz,M.andStegun,I.A.(Editors) ,Handbook of Mathematical Functions with Formulas, Graphs
and Mathematical Tables, National Bureau of Standards Applied Mathematics, ... 1998.
Korn,G.A.andKorn,T.M.,Mathematical Handbook for Scientists and Engineers, 2nd Edition, Dover
Publications, New York, 2000.
Prudnikov, A. P., Brychkov, Yu. A., and Mari...
... R
.(4.6.3.23)
Remark. To obtain formulas (4.6.3.22) and (4.6.3.23), one should rewrite the equation of the straight line
in parametric form and replace x, y,andz in equation (4.6.3.16) of the plane by their ... length of the
perpendicular drawn from this point to the plane and taken with sign + if the point and the
origin lie on opposite sides of the plane and with sign – if...
... under rotations of the coordinate axes. Here Δ
ij
is the
cofactor of the entry a
ij
in Δ.
The classification of quadrics based on the invariants S, T , δ ,and and the semi-
invariants σ and Σ is given ... the coefficients, has 1 of 17 canonical forms, each of which is associated with a
certain class of quadrics (see Table 4.3).
4.7.2-3. Invariants of quadrics.
The shape of a...
... = 0
by the substitution y = x + 1/x.
5.1.5-2. Equations of general form and their properties.
An algebraic equation of degree n has the form
a
n
x
n
+ a
n–1
x
n–1
+ ···+ a
1
x + a
0
= 0 (a
n
≠ ... form
p/q
,where
p
is a divisor of
a
0
and
q
is a divisor of
a
n
.If
a
n
= 1
, then all rational roots of equation (5.1.5.1) (if they exist) are integer divisors of the
free term.
THE...
... ALGEBRA
Properties of the set of all solutions of a homogeneous system:
1. All solutions of a homogeneous system (5.5.1.3) form a linear space.
2. The linear space of all solutions of a homogeneous ... unknown
quantities and a basic matrix of rank r is isomorphic to the space A
n–r
of all ordered
systems of (n – r) numbers. The dimension of the space of solutions is eq...
... graph of the function y = |f (x)| is obtained from that of y = f (x) by preserving
the parts of the latter for which f (x) ≥ 0 and symmetric reflection, with respect to the axis
Ox, of the parts for ... term.
The remainders in the form of Lagrange and Cauchy can be obtained as special cases of the
Schl
¨
omilch formula with p = n + 1 and p = 1, respectively.
For a = 0,...
... λ ≤ λ
2
and let it has a continuous partial derivative
∂
∂λ
f(x, λ)inthe
284 INTEGRALS
7.1.6-2. Integration of the product of a polynomial by a trigonometric function.
1
◦
. General formulas:
P
n
(x)cos(ax) ... ···
–cos(ax)
P
n
(x)
a
–
P
n
(x)
a
3
+ ···
+ C.
These formulas are obtained by repeated integration by parts; see formula 4 from Para-
graph 7.1.2-2 with f (x)=P
n
(x)...
... Geometric and Physical Applications of the Definite Integral
7.2.6-1. Geometric applications of the definite integral.
1. The area of a domain D bounded by curves y = f(x)andy = g(x) and straight ... convergence of the latter integral in (7.2.7.2) implies the conver-
gence of the former integral.
3. If
0 < K ≤ ∞
, the divergence of the latter integral in (7.2.7.2) implies the...
... x
X.
8.2.2. Basic Criteria of Uniform Convergence. Properties of
Uniformly Convergent Series
8.2.2-1. Criteria of uniform convergence of series.
1. Weierstrass criterion of uniform convergence. A functional ... sequence for
each x and are uniformly bounded (i.e., |u
n
(x)| ≤ K with a constant K independent of n, x).
3. Dirichlet criterion of uniform convergence of function...
... harmonic and bounded in D and equal to u(ξ)
at all points of continuity of this function on C.
T
HEOREM ON THE UNIQUENESS OF A SOLUTION OF THE GENERALIZED DIRICHLET PROB-
LEM.
In a given domain for ... inward normal derivative.
Green’s formula expresses the solution of the Dirichlet problem for some domain D
in terms of the logarithm of the conformal mapping of the dom...
... 450 INTEGRAL TRANSFORMS
TABLE 11.5 (continued)
Summary table of integral transforms
Integral transform Definition Inversion formula
Euler
transform of
the 2nd kind*
F (x)=
1
Γ(μ)
a
x
f(t) ... are tables of the Fourier cosine transform (see Section T3.3 and the references
listed at the end of the current chapter).
3
◦
. Sometimes the asymmetric form of the Fourier cosine transform...
... integrand of the last term in solution (14.10.2.4)
can be expressed via the Green’s function G(x, y, t, τ ). The corresponding formulas for H
are given in Table 14.9 for the three basic types of ... equation of special form
–L
x
[G]=δ(x – y)(14.10.3.5)
with the homogeneous boundary condition
Γ
x
[G]=0 for x S.(14.10.3.6)
14.11. CONSTRUCTION OF THE GREEN’S FUNCTIONS.GENERAL FORMU...