| Main Title |
Numerical Approximation of Semi-Integrals and Semiderivatives by Product Quadrature Rules. |
| Author |
Lether, F. G. ;
Cline, D. M. ;
Evans, O. ;
|
| CORP Author |
Environmental Research Lab., Athens, GA. ;Computer Sciences Corp., Athens, GA. |
| Year Published |
1982 |
| Report Number |
EPA/600/J-82/013; |
| Stock Number |
PB85-165868 |
| Additional Subjects |
Integral equations ;
Approximation ;
Numerical integration ;
Interpolation ;
Numerical quadrature ;
Foreign technology ;
Computer applications
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB85-165868 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
13p |
| Abstract |
This paper is concerned with the numerical calculation of the semi-integral and semiderivative of a function f, whose values f (xj) are known on a discrete set of abscissas 0 = x(1) < x(2) < ... < x(n). A family of product quadrature rules is developed to approximate the semi-integral d (sup -1/2) f/dx (sup -1/2) and semiderivative d (sup 1/2) f / dx (sup 1/2) at each of the positive abscissas x(j), j = 2,3,...,n. Numerical applications and comparisons with known rules are presented. |
| Supplementary Notes |
Prepared in cooperation with Computer Sciences Corp., Athens, GA. |
| Availability Notes |
Pub. in Jnl. of Mathematics and Physical Sciences, v16 n2 p111-121 1982. |
| NTIS Title Notes |
Journal article. |
| PUB Date Free Form |
c1982 |
| Category Codes |
12A; 72B |
| NTIS Prices |
Not available NTIS |
| Primary Description |
600/01 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
513019029 |
| Origin |
NTIS |
| Type |
CAT |
