Maxima 5.23 change log Backwards-incompatible changes: * package draw: changed names of some options: file_bgcolor --> background_color pic_width, pic_height, eps_width, eps_height, pdf_width, pdf_height --> dimensions rot_horizontal, rot_vertical --> view New items in core: * function bf_find_root: bigfloat version of find_root * function find_root: recognize keyword arguments New items in share: * package cobyla: import Fortran COBYLA (constrained optimization) * package draw: new graphic objects 'errors' and 'region' Other revisions: * further work on exponential integrals * further work on abs and signum identities * further work on special cases in integration * translation of reference manual to German (ongoing) * clean-up in code related to processing files * general code clean-up * package ezunits: additional built-in conversions Bug fixes: 3114834 maxima-help does not find help topics 3111568 subsequent calls to gradef hide variable dependencies 3102421 noninteractive-mode and kill(all) 3101075 limit bug 3093408 Bug in simplify_sum 3085498 integration error (partial solution) 3081820 lbfgs causes error 3080397 laplace(unit_step(-t),t,s) generates an error 3079975 rectform(atan2(y,0)) -> division by zero 3073827 integrate(t*cos(a*t^2 + b*t + c), t, 0, 1) => division by 0 3072490 contrib diag.mac variable scope 3071208 rtest15--limit to inf from above 3067311 eivects doesn't load eigen automatically 3064709 domain error for tan 3062883 diff does not recognize indirect dependencies in expressions 3060669 filename_merge with more than two arguments 3060166 und documentation is incorrect 3058324 $save must bind *print-circle* to NIL 3058290 tan(%pi*integer) simplification 3055427 conjugate solver 3045559 integrate(exp(-u^2), u, minf, x) => incorrect gamma_incomple 3041267 jacobi_cs(x,1) returns a wrong expression 3041196 carg(exp(x+%i*y)) -> y not correct 3040667 logarc(acosh(z)) needlessly complicated 3039452 integrate(sqrt(t^c)/(t*(b*t^c+a)),t) hangs 3038883 In general exp(z)^a --> exp(z*a) not correct 3034415 integrate(1/abs(x),x) using abs_integrate 3024924 list_matrix_entries 3020589 xlabel and ylabel don't change plot3d axis labels 3020243 defint(exp(cos(x))*cos(sin(x)),x,0,2*%pi) wrong result 0 2997443 ic2 fails 2970792 gradef(s) together with vect package 2881021 ic2 and bc2 may return incorrect results (solution suggeste) 2796194 error doing a Fourier transform. 2727846 tan(%pi/2) is not correct (or just not nice?) 2555641 no doc for subnumsimp 2541376 antidiff bug 2171237 load(basic) warnings 2123651 min and max of imaginary and real numbers 1993208 cartesian_product incorrect on empyt argument list 1990099 wrong integer_partitions(0) 1892341 taylor message about something assumed to be 0 in integral 1890128 no user doc for cauchy_matrix 1839088 ic2 fails with division by 0 1789213 ic1 for solution containing indefinite integral 1439559 function burn is broken 1213621 reveal with matrix argument 1149719 ratvarswitch not documented 1045920 a>1 and b>1, is a+b>2? 875089 defint(f(x)=g(x),x,0,1) -> false = false 767338 Evaluation of array names 703789 save() doesn't return a pathname (unnumbered) integrate(cos(2*x)*cos(x),x) is wrong.