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Posted: 3/21/2017 9:24:43 PM EDT
Dual integrals, Lagrange multipliers, directional derivatives and the gradient vector. It's fucking me. Any advice from the hive?
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I have no idea what any of those are, so good luck sounds painful. I still remember how much I hated taking statistics in school.
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I remember doing integrals and calculating the volume of cylinders with the shell method. However, I would have to relearn all that crap after 20 years.
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Tutor all you can. Don't do homework alone, do it with a buddy, hopefully a smart one, or a tutor. Your teacher may do after hours and such as well.
I still dropped out and changed degrees. |
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Lol.
You'll never use it again. Except for all the times you'll use it again between now and graduation. |
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Do your homework in groups, lead the group even if your not sure what's going on.
Don't use the answer book, if you don't get it life is harder in later classes (diff eq.) |
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Stick with it...then realize you'll likely never use it again View Quote calc 1, took 3 attempts, 2 took 2, 3 took 1, diff equations 1. I suspect you could do a bar chart on my party to study ratio based o this. |
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Last time I used it was when doing Laplace transforms in senior design controls class, over 20 years ago.
In real life, unless you're in research or going for an advanced degree, you can use MathCAD or something similar. I do a bit of regression and linear programming these days, but I still use excel or mini tab. |
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Stick with it and don't give up.
My career in technology is dying now (20+ years post graduating) because I don't have the math chops. |
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Last time I used it was when doing Laplace transforms in senior design controls class, over 20 years ago. In real life, unless you're in research or going for an advanced degree, you can use MathCAD or something similar. I do a bit of regression and linear programming these days, but I still use excel or mini tab. View Quote |
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Dual integrals, Lagrange multipliers, directional derivatives and the gradient vector. It's fucking me. Any advice from the hive? View Quote Linear algebra was the only class I ever failed. When I took it again I allocated three times the study/practice time and aced it. Especially if most math comes easily to you and integral calculus doesn't, do it more. Practice, practice, practice. Never used the stuff after that class. |
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Go to a library and get a calculus book from the 50s or 60s.
We did that in college, and wow! Those old books did such a better job of explaining the concepts and relating them to the problems. Also, study in a group if you can. |
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Use Wolfram Alpha or a TI 89 to help work through homework and practice problems. You have to visualize what is happening in a 3d coordinate plane before it can make sense. You can't memorize algorithms to get through it.
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LOL. yes yes, let the suck consume you.
Bask in the anxiety of waiting for that next exam. Long for that WTF at question one. |
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push, push, push through it.
The grade is not a big deal, but you must pass and get the BS degree You will not make less than 100k working for someone else in a few years if you keep pushing on and get that BS degree.. You may not use calculus directly, but it taught you how to think logically, understand what can be done, and that is the key to the BS field. |
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Dual integrals, Lagrange multipliers, directional derivatives and the gradient vector. It's fucking me. Any advice from the hive? View Quote I'm graduating with a BS in Mech E in 5 months. I don't remember how to do any of that stuff, though I do recall learning it. Sounds hard!! |
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i hated calc 3 with a seething passion during my undergrad.
i am doing a masters now and everything "clicks" better. the pain is part of getting better at analytical thinking |
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i hated calc 3 with a seething passion during my undergrad. i am doing a masters now and everything "clicks" better. the pain is part of getting better at analytical thinking View Quote |
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If I had it to do all over again, I would have pursued a career that required me to use Integral Calculus very frequently. Two reasons:
1. The time I spent learning it wouldn't have been wasted. Seriously, I couldn't test out of it now you put a gun to my head. I've forgotten all of it. "Your brain is a muscle" as they say, and it does atrophy. 2. The number of people who still know how to do it 15+ years removed from college (and can't be bothered to teach it) are very few in number. For certain professions, this makes you one very valuable motherfucker. |
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I'm doing Laplace transforms now in process and systems dynamics class. It's actually kind of making sense now, though. View Quote For instance, about 4 years ago I needed to develop a formula to determine the amount of bulk solid contained inside an oddly shaped bin varied by the height of the pile which could be measured by dip stick. By taking all the external measurements (custom welded vessel) and using the angle of repose for the material, I used my calculus III to derive the function for the radar level transmitter. Better experience than anything the math professor attempted in college, someday I'll pay it forward and guest lecture at a local community college or something. |
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That one was easy compared to my advanced statistics class although I hated calc. I think mathematical modeling (basically coming up with mathematical formulas to describe stuff you observe in the real world) was my favorite.
I use none of it in real life occasionally I use some computer math stuff like simple math in different base number system lime binary or octal but rarely. |
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Integral Calculus is Calc 2, right? I took Calc 3. It's what convinced me to change from an engineering degree to a business degree.
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My son passed Physical Chemistry and is hopefully going to pass Quantum Chemistry. He's had 5 calculus classes and is still struggling.
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I work in graphics software. I single handedly changed the display scheme in a new product we were developing. I take 3d boundary curves and map them into 2d parameteric range. For periodic surfaces like spheres and cones, the boundaries in 2d may be open with endpoints on the parametric rectangle if they cross the parameter seam. For these open curves, i close them with pieces fron the parametric rectangle to make them closed. Now the closed boundaries divide the rectangular region into parts of the surface we want to keep, and parts we want to discard. I use LINE INTEGRALS and GREENS THEOREM to find the area enclosed by a closed 2d boubdary curve. Based on the sign of the integral, i use a hardware accelerated method to fill the polygons with essentially "keep" or "discard" color. Once the png is produced this way, one merely has to apply this texture to an ordinary grid mesh.
It made our rendering 1000 times faster and about halved the memory used by a honest constrained tessellation. I got big monies out of that. Fuck anyone who says you won't use integral calculus. |
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Go see the TA every week, get a tutor, etc.
Calculus will destroy your will to live, only for Differential Equations to fuck your corpse. Kharn |
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If I had it to do all over again, I would have pursued a career that required me to use Integral Calculus very frequently. Two reasons: 1. The time I spent learning it wouldn't have been wasted. Seriously, I couldn't test out of it now you put a gun to my head. I've forgotten all of it. "Your brain is a muscle" as they say, and it does atrophy. 2. The number of people who still know how to do it 15+ years removed from college (and can't be bothered to teach it) are very few in number. For certain professions, this makes you one very valuable motherfucker. View Quote |
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Get the Schaum's books, do a question, then follow along with the breakdown to see where you went wrong.
And Khan Academy. |
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If I had it to do all over again, I would have pursued a career that required me to use Integral Calculus very frequently. Two reasons: 1. The time I spent learning it wouldn't have been wasted. Seriously, I couldn't test out of it now you put a gun to my head. I've forgotten all of it. "Your brain is a muscle" as they say, and it does atrophy. 2. The number of people who still know how to do it 15+ years removed from college (and can't be bothered to teach it) are very few in number. For certain professions, this makes you one very valuable motherfucker. View Quote |
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if you dread doing it, you will do poorly. Practice by working problems is the key to success.
When I was able to mentally view it as a game and learn the rules, it wasn't as much work practicing which translated into good grades. |
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I work in graphics software. I single handedly changed the display scheme in a new product we were developing. I take 3d boundary curves and map them into 2d parameteric range. For periodic surfaces like spheres and cones, the boundaries in 2d may be open with endpoints on the parametric rectangle if they cross the parameter seam. For these open curves, i close them with pieces fron the parametric rectangle to make them closed. Now the closed boundaries divide the rectangular region into parts of the surface we want to keep, and parts we want to discard. I use LINE INTEGRALS and GREENS THEOREM to find the area enclosed by a closed 2d boubdary curve. Based on the sign of the integral, i use a hardware accelerated method to fill the polygons with essentially "keep" or "discard" color. Once the png is produced this way, one merely has to apply this texture to an ordinary grid mesh. It made our rendering 1000 times faster and about halved the memory used by a honest constrained tessellation. I got big monies out of that. Fuck anyone who says you won't use integral calculus. View Quote Without being too exact (I don't want or need to be up in your business)...how much can a guy like you expect to earn salary wise, say...10 years after graduation? And how confident are you that you'll always be employable until say...age 65? |
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Integral calculus is the basis of all tree volumetric equations as a tree is essentially a cylinder, and in order to determine the volume of that space you must create and model equations using integrations.
Don't ask me to do it now, 20 years later, but I do still remember how to do derivatives. |
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I learn math very quickly. But then I forget it fast if I don't use it. If I could do integral calculus for a living (that wasn't a teaching job) I'd do it for sure. View Quote View All Quotes View All Quotes Quoted:
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If I had it to do all over again, I would have pursued a career that required me to use Integral Calculus very frequently. Two reasons: 1. The time I spent learning it wouldn't have been wasted. Seriously, I couldn't test out of it now you put a gun to my head. I've forgotten all of it. "Your brain is a muscle" as they say, and it does atrophy. 2. The number of people who still know how to do it 15+ years removed from college (and can't be bothered to teach it) are very few in number. For certain professions, this makes you one very valuable motherfucker. |
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Start a new thread. Post one of these http://i.imgur.com/BEOnQ9K.jpg Realize that you came to the wrong place to talk about calculus. View Quote |
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PChem was HORRIBLE. I barely passed that stuff. All greek. Tell him to rough it out, he won't need it again. View Quote View All Quotes View All Quotes Quoted:
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My son passed Physical Chemistry and is hopefully going to pass Quantum Chemistry. He's had 5 calculus classes and is still struggling. Once DiffEq came around, it was "holy shit, P Chem makes sense!" but DiffEq still raped us. Kharn |
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PEMDAS threads (as I've come to call them) frequently run 20+ pages of arguing. View Quote View All Quotes View All Quotes Quoted:
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Start a new thread. Post one of these http://i.imgur.com/BEOnQ9K.jpg Realize that you came to the wrong place to talk about calculus. |
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Those rap stars that make more in year than you will make in your lifetime are no where as bad ass you... those bitches and hoes will be along shortly..
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