[Bug 1161670] Re: Order of operations is incorrect for exponents and parentheses
The gcalctool in Ubuntu 12.04 "Precise Pangolin" is a transitional package for the GNOME desktop calculator. In Ubuntu 14.04 "Trusty Tahr" and later, GNOME desktop calculator is called gnome-calculator. gnome- calculator 1:3.10.3-0ubuntu0.1.1 in Ubuntu 14.04 "Trusty Tahr" evaluates all of your examples as you expect it to. ** Changed in: gcalctool (Ubuntu) Status: New => Fix Released -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gcalctool in Ubuntu. https://bugs.launchpad.net/bugs/1161670 Title: Order of operations is incorrect for exponents and parentheses To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gcalctool/+bug/1161670/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1161670] Re: Order of operations is incorrect for exponents and parentheses
Upon further reading, it seems your third example is valid. One must use parentheses if the entire exponent is 2π, as in 3^(2pi), otherwise 3^2pi should evaluate to 9pi as you said. Also from the same further reading, using your second example, if not wanting to simply write/enter 25000*1.01^20 we should use (25000)(1.01)^20. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gcalctool in Ubuntu. https://bugs.launchpad.net/bugs/1161670 Title: Order of operations is incorrect for exponents and parentheses To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gcalctool/+bug/1161670/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1161670] Re: Order of operations is incorrect for exponents and parentheses
Also see the first, second and fourth paragraphs of https://math.berkeley.edu/~gbergman/misc/numbers/ord_ops.html -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gcalctool in Ubuntu. https://bugs.launchpad.net/bugs/1161670 Title: Order of operations is incorrect for exponents and parentheses To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gcalctool/+bug/1161670/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1161670] Re: Order of operations is incorrect for exponents and parentheses
AFAIK and IIRC, parentheses are not the equivalent of a multiplication symbol. It is simply mathematical conventiont to omit the multiplication symbol between two variables, between a constant and a variable, and between a constant or variable and an operator such as ( or Σ. Note that your first two examples are resolved if you stop using parentheses where they are unnecessary. The fundamental issue here is the ambiguity caused by a lack of superscript. I've attached an example of what I'm talking about. ** Attachment added: "math.docx" https://bugs.launchpad.net/ubuntu/+source/gcalctool/+bug/1161670/+attachment/4755032/+files/math.docx -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gcalctool in Ubuntu. https://bugs.launchpad.net/bugs/1161670 Title: Order of operations is incorrect for exponents and parentheses To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gcalctool/+bug/1161670/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
