2 The file SHARE1;DELTA FASL contains a function DELINT which can do integrals
3 which contain Dirac delta functions. The calls are DELINT(expr,var) and
4 DELINT(expr,var,lower_limit,upper_limit). These give the indefinite
5 and definite integrals respectively. The delta function is represented
6 by DELTA(argument); the step function (which is returned by the indefinite
7 integral) by THETA(argument). These functions are not defined in the file.
8 Currently lower_limit must be lower than upper_limit. This will be
9 corrected in a later version. Currently derivatives of delta's
10 are not handled. This may be put in later. Error checking is currently
12 If there is no delta function in expr whose argument depends on
13 var,DELINT calls INTEGRATE.
14 BATCH file: SHARE1;DELTA >
15 DEMO SHARE1;DELTA DEMO.
16 Comments, bugs to MPS.