Re^5: Tk - Discipulus 15 puzzle

Back in high school, I was very good at doing matrix math "by hand".

Of course, once I wasn't (explicitly¹) required to do it by hand, I didn't.

¹The instructor didn't specify, I didn't ask. But, I did include a note that I was also taking a 400-level CS class in algorithms and that he was welcome to see my source code.

Comment on Re^5: Tk - Discipulus 15 puzzle

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Re^6: Tk - Discipulus 15 puzzle by perldigious (Priest) on Jun 15, 2017 at 21:25 UTC
In my case, I was doing this symbolically trying to derive equations in terms of variable resistance values to use in SPICE simulations. With Mathcad or some other symbolic capable mathematics package that also includes matrix math that would be relatively easy, but the equations were simple enough that I just set about doing it by hand figuring it would be faster than figuring out how to get some unfamiliar tool to do it (I may have been wrong about that). I ended up just using old fashioned linear system of equations substitution, and then later realized the entire thing could be solved a lot more simply based on the symmetry of the circuit. Like I said, dumber every year I get further away from college. :-) Just another Perl hooker - But the purist monks keep telling me I should do it for love, not money.	[reply]

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Re^6: Tk - Discipulus 15 puzzle
by perldigious (Priest) on Jun 15, 2017 at 21:25 UTC

In my case, I was doing this symbolically trying to derive equations in terms of variable resistance values to use in SPICE simulations. With Mathcad or some other symbolic capable mathematics package that also includes matrix math that would be relatively easy, but the equations were simple enough that I just set about doing it by hand figuring it would be faster than figuring out how to get some unfamiliar tool to do it (I may have been wrong about that). I ended up just using old fashioned linear system of equations substitution, and then later realized the entire thing could be solved a lot more simply based on the symmetry of the circuit.

Like I said, dumber every year I get further away from college. :-)

Just another Perl hooker - But the purist monks keep telling me I should do it for love, not money.

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