Logged In: YES
user_id=1023504
I don't see the bug here, the result appears to be correct
actually. D6 is the square root of the D5 expression, which
is what it should be, or am I missing something?
Viktor
the following exhibits a bug (probably) in radcan
(C1) p(u,k):=u^(-1)+u^k;
(C1)
- 1 k
(D1) p(u, k) := u + u
(C2) p1(u,k):=at(diff(p('u,k),'u),['u=u]);
(D2) p1(u, k) := AT(DIFF(p('u, k), 'u), ['u = u])
(C3) p2(u,k):=at(diff(p('u,k),'u,2),['u=u]);
(D3) p2(u, k) := AT(DIFF(p('u, k), 'u, 2), ['u = u])
(C4) tau:subst(solve(p1(u,k),u),u);
Is k an integer?
y;
1
(D4) ------
1
-----
k + 1
k
(C5) radcan(p(tau,k)/p2(tau,k));
k + 1
(D5) --------------------------
k + 3 2
----- -----
k + 1 k + 1 2
2 k + k (k - k)
------ which is correct ----------------------------------------------------
(C6) radcan(sqrt(%));
SQRT\(k + 1\)
(D6) -------------------
1
-----
k + 1 2
k SQRT(k + k)
------- which is bogus, evaluate D5 and D6 at k=2 for example ------
(C7) bug_report();
The Maxima bug database is available at
http://sourceforge.net/tracker/?atid=104933&group_id=4933&func=browse
Submit bug reports by following the 'Submit New' link on that page.
Please include the following build information with your bug report:
-------------------------------------------------------------
Maxima version: 5.9.0rc3
Maxima build date: 21:0 11/26/2002
host type: i686-pc-linux-gnu
lisp-implementation-type: Kyoto Common Lisp
lisp-implementation-version: GCL-2-5.0
-------------------------------------------------------------
The above information is also available from the Maxima function
build_info().
maybe this is related to bug no 635338:
http://sourceforge.net/tracker/index.php?func=detail&aid=635338&group_id=4933&atid=104933
Logged In: YES
user_id=1023504
I don't see the bug here, the result appears to be correct
actually. D6 is the square root of the D5 expression, which
is what it should be, or am I missing something?
Viktor
Logged In: YES
user_id=651552
Sorry, it seems that I'm really stupid. I cannot see a bug
here either.
Excuse me, please,
Martin Rubey