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Post by Marty on Oct 4, 2022 19:31:15 GMT -5
The family is well. Rob reported that she got a 100% on her differential equations exam. Seriously, I know the term but I have no idea what they do. I failed calc II and dropped the make up. 🤷‍♂️❤️ I dropped out of math in 9th grade. That was allowable back then. But I can add, subtract, multiply, divide and find averages. I can't imagine needing to know anything beyond that. Algebra is good to know if you want to follow into the higher maths. I was a wiz at it in High School but use it or lose it. Now I can't remember any of it. |
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Post by drlj on Oct 4, 2022 19:38:38 GMT -5
Barb speaks fluent math. I can barely communicate in the language at all.
Thank God for calculators but, if they were wrong, how would I know?
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Post by TKennedy on Oct 4, 2022 19:42:41 GMT -5
Good morning, all. Clinic is quite busy ahead of Fall Break. All the students want to be patched up or medicated or cleared of certain diseases before they head out for the long weekend. Weather is beautiful. Is there ever an honorable discharge in the student health arena Shannon? |
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Post by amanajoe on Oct 4, 2022 19:43:32 GMT -5
I dropped out of math in 9th grade. That was allowable back then. But I can add, subtract, multiply, divide and find averages. I can't imagine needing to know anything beyond that. Algebra is good to know if you want to follow into the higher maths. I was a wiz at it in High School but use it or lose it. Now I can't remember any of it. As an electrical engineer (and sometimes professor) we had to go through all the math we could stand because we were told it was necessary to know calc I and II along with diff eq only to find out we would throw it all away and switch back to algebra using a theorem called LaPlace Transform Analysis. It was a rite of passage we were told, and I faithfully started every LaPlace class I taught telling them the same thing. |
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Post by Village Idiot on Oct 4, 2022 20:56:34 GMT -5
That makes perfect sense, Joe. Except that I have no idea what LaPlace is.
(Don't worry, I'm not asking for an explanation).
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Post by Marshall on Oct 4, 2022 23:00:03 GMT -5
%2Fview-of-eiffel-tower-717173895-5b08511a3de4230037726976.jpg&f=1&nofb=1&ipt=9581d7c400da4d9cfb165ac79e4906cfc611824bc7c1301895b8186d57b08162&ipo=images) La Place. |
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Post by david on Oct 4, 2022 23:14:51 GMT -5
Trig and baby calculis were my high points in college. However, I have made it to Marshall's high point, above. Once, 46 years ago, with a German girl friend who spoke very little English, and I spoke little more than hormoneous German. A bird pooped on my head that day.
The next time was a few years later, with my now wife. No bird pooping took place during that trip. Probably the reason we got married.
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Dub
Administrator
I'm gettin' so the past is the only thing I can remember.
Posts: 20,354 
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Post by Dub on Oct 4, 2022 23:52:33 GMT -5
That makes perfect sense, Joe. Except that I have no idea what LaPlace is. (Don't worry, I'm not asking for an explanation).  |
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Post by amanajoe on Oct 5, 2022 0:20:47 GMT -5
For those that didn't catch it in Dub's table of functions, F(t) is in the time domain, F(s) is in the frequency domain. s = 1/t and vice versa. Therefore all the functions are being expressed as frequencies and not time.
You can do all the math in the frequency domain, and then convert back to the time domain to get your answer.
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Post by jdd2 on Oct 5, 2022 1:48:23 GMT -5
For those that didn't catch it in Dub's table of functions, F(t) is in the time domain, F(s) is in the frequency domain. s = 1/t and vice versa. Therefore all the functions are being expressed as frequencies and not time. You can do all the math in the frequency domain, and then convert back to the time domain to get your answer. Shucks, you beat me to it...! |
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Post by millring on Oct 5, 2022 4:31:58 GMT -5
I dropped trigonometry to save my GPA. I couldn't understand what it was we were being taught. Nobody (the teacher) said a simple, "Say you want to figure out what _____ is but you don't know _____. I'm going to teach you how trig will make it possible."
I honestly had no idea what sine cosine and tangent were describing. I figured I'd better get out of there before I flunk. To this day it bothers me. I don't know if it was a bad teacher or if I simply didn't have a brain receptacle for that stuff to be plugged into.
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Post by brucemacneill on Oct 5, 2022 4:47:32 GMT -5
I dropped trigonometry to save my GPA. I couldn't understand what it was we were being taught. Nobody (the teacher) said a simple, "Say you want to figure out what _____ is but you don't know _____. I'm going to teach you how trig will make it possible." I honestly had no idea what sine cosine and tangent were describing. I figured I'd better get out of there before I flunk. To this day it bothers me. I don't know if it was a bad teacher or if I simply didn't have a brain receptacle for that stuff to be plugged into. Growing up surrounded by engineers I was the only kid in the 1st grade who knew what trig was for. I didn't know how to do it but I had seen the guys using it to figure out where something was that you couldn't see from where you were because of trees. While doing civil engineering in the Navy and for a couple of years after I got out I learned that a chainsaw can eliminate the need for trig. |
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Post by TKennedy on Oct 5, 2022 7:00:07 GMT -5
Speaking of logarithms I remember the slide rule days quite well. There were stylish ways to carry one.
Stuck in the back pocket of your jeans was cool. Hanging from your belt in a leather holster wasn’t.
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Post by drlj on Oct 5, 2022 7:41:22 GMT -5
Day of atonement is over. You may revert to normal, sinful life styles.
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Post by howard lee on Oct 5, 2022 8:18:39 GMT -5
Day of atonement is over. You may revert to normal, sinful life styles.
In fact, today is the day of atonement. Yesterday was the eve of the day of atonement. But feel free to return to your "normal, sinful life styles."
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Dub
Administrator
I'm gettin' so the past is the only thing I can remember.
Posts: 20,354
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Post by Dub on Oct 5, 2022 10:31:30 GMT -5
Speaking of logarithms I remember the slide rule days quite well. There were stylish ways to carry one. Stuck in the back pocket of your jeans was cool. Hanging from your belt in a leather holster wasn’t. My father was teaching me to use a slide-rule when I was still in grammar school. I thought they were fascinating.  |
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Post by John B on Oct 5, 2022 11:10:01 GMT -5
Day of atonement is over. You may revert to normal, sinful life styles. In fact, today is the day of atonement. Yesterday was the eve of the day of atonement. But feel free to return to your "normal, sinful life styles."
Hmm. I’m still cutting people off in traffic, but I am mouthing “Sorry!” in the rearview mirror. |
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Post by drlj on Oct 5, 2022 11:15:03 GMT -5
Day of atonement is over. You may revert to normal, sinful life styles. In fact, today is the day of atonement. Yesterday was the eve of the day of atonement. But feel free to return to your "normal, sinful life styles."
Make up your mind! It’s bad enough to be atoning without getting bad advice on the proper day to do it. Catholics have it easy. We get in a closet, mumble a few things that sound like sins, and we hit the road fresh as a daisy. We don’t need no special day to feel guilt. It’s a 24/7/365 thing for us. Besides, wasn’t that a Barry McGuire song, Eve of Atonement? |
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Post by howard lee on Oct 5, 2022 11:53:35 GMT -5
In fact, today is the day of atonement. Yesterday was the eve of the day of atonement. But feel free to return to your "normal, sinful life styles."
Make up your mind! It’s bad enough to be atoning without getting bad advice on the proper day to do it. Catholics have it easy. We get in a closet, mumble a few things that sound like sins, and we hit the road fresh as a daisy. We don’t need no special day to feel guilt. It’s a 24/7/365 thing for us. Besides, wasn’t that a Barry McGuire song, Eve of Atonement?
This was the first sentence in my OP from yesterday: "Tonight is the eve of Yom Kippur, the most serious holiday on the Jewish calendar." It's funny the way this religion observes holidays. They begin the night before the day of, after sunset, and continue until the next specified sunset, be it one day or seven.
As far as the day of atonement, we save up all our sins for a whole year and then blast 'em out in one convenient day. And no one has to divulge them to their rabbi or anyone else. It's just between the sinner and You-Know-Who.
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Post by Cornflake on Oct 5, 2022 12:35:05 GMT -5
Here's a digression that will probably bore everyone.
I've been serving on a search committee and I've had to listen to a lot of sermons. One was about repentance. The priest discussed how the Greek word translated as "repentance" in much Christian writing is "metanoia." The word really means a fundamental change in thinking that leads to a fundamental change in behavior and/or way of living. There's a good Wikipedia article about it. Many religious thinkers have questioned the translation of the "metanoia" as "repentance." Repentance carries a connotation of regret and perhaps apology. Beating yourself up is neither necessary nor sufficient for metanoia. Change is. Tertullian observed that "in Greek, metanoia is not a confession of sins but a change of mind."
I know you were all wondering about this.
(PS: In Judaism, repentance is presumably a translation from Hebrew, not Greek, and I have no idea what the original Hebrew meant. Maybe Jews do have to beat themselves up.)
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