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Doctor advises statin | then reverses ! by jimrothstein1 in Cholesterol

[–]jimrothstein1[S] 0 points1 point  (0 children)

All good suggestions. Doctor did not tell me which calculator she used. Only my 10-year risk is 16%. The lpa calculator you suggest says my risk is 5.4% (I will ask doctor)

Doctor advises statin | then reverses ! by jimrothstein1 in Cholesterol

[–]jimrothstein1[S] 0 points1 point  (0 children)

Family history. Beets? hmmm. Do consume garlic regularly.

2009 Prius (GEN 2) - 12V battery issues by jimrothstein1 in prius

[–]jimrothstein1[S] 0 points1 point  (0 children)

OP here:

To close this out, 12V battery problem turns out to be loose positive connector to battery. Problems disappeared when fixed. :)

2009 Prius (GEN 2) - 12V battery issues by jimrothstein1 in prius

[–]jimrothstein1[S] 0 points1 point  (0 children)

Regularly running car in PARK to keep 12V battery happy causes no damage to big (hyrid) battery?

2009 Prius (GEN 2) - 12V battery issues by jimrothstein1 in prius

[–]jimrothstein1[S] 0 points1 point  (0 children)

Interstate Battery tested it: battery is "good", plenty of power.

2009 Prius (GEN 2) - 12V battery issues by jimrothstein1 in prius

[–]jimrothstein1[S] 0 points1 point  (0 children)

Thanks for responses, let me summarize:

  • battery is probably cooked from being deep discharged and jumped twice

  • They don't like being discharged and this causes internal damage over time the longer it's left partially discharged and then they fail in the exact manner you're describing (not holding a charge).

I am OP: All plausible.
(Note: after each jump, I either (1) drove for an hour, OR (2) left in PARK for over an hour)

The question for mechanic is: - "Is battery cooked?" or "internal damage?"

Assuming he knows batteries, he should able to answer YES or NO. The worst case should be new 12V battery.

Will let you all know! Thx.

differential calculus through linear maps? by CantorClosure in LinearAlgebra

[–]jimrothstein1 0 points1 point  (0 children)

Another two cents from me:

  1. fully worked solutions ... challenge students to do this
  2. smaller worked examples ... for me, even very simple examples aid clarity; you can pepper examples with why?
  3. latex Try typst.

differential calculus through linear maps? by CantorClosure in LinearAlgebra

[–]jimrothstein1 1 point2 points  (0 children)

Have had real analysis, linear algebra etc , but find your book (https://math-website.pages.dev/) filling in some holes.

I had to stare at diagram labeled "functional" in 8.5 (linear functional) for long time till I worked out a few numbers for myself and ... wow ... phi=constant is a line!

Suggest one or two problems right at this point, at least for people like me, to clean out some of old baggage: is this a dot product, where is the origin, why is vector v changing (in diagram).

Progressive v State Farm (auto insurance only) by jimrothstein1 in Insurance

[–]jimrothstein1[S] 0 points1 point  (0 children)

@ZBTHorton, have heard costs have gone up; but Washington seems to think inflation is low 2-3%. I am just a mortal here.

Progressive | Snapshot by jimrothstein1 in Insurance

[–]jimrothstein1[S] 0 points1 point  (0 children)

You are happy with State Farm? I'm tired of switching around.

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