Revolutions problem y=-x^2+12x-35

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Discussion Overview

The discussion revolves around a student's experience with a calculus II midterm, specifically focusing on computational errors encountered while solving problems, including a solid of revolutions problem represented by the equation y=-x^2+12x-35. Participants share their thoughts on handling computational mistakes and the implications for the student's major in electrical engineering.

Discussion Character

  • Debate/contested
  • Homework-related
  • Meta-discussion

Main Points Raised

  • One participant expresses concern over their midterm performance due to computational errors, despite understanding the calculus concepts involved.
  • Another participant reassures that computational errors should not dictate a change in major if the student enjoys the subject matter.
  • Some participants suggest that carefulness in computations is crucial and recommend double-checking work during the test.
  • A participant mentions that computational errors are common and emphasizes the importance of practice in improving accuracy.
  • One participant shares a positive outcome, having received a high score after partial credit, indicating that performance can improve despite initial setbacks.
  • Another participant criticizes the web-based testing platform for not providing adequate partial credit, which may contribute to student anxiety over performance.

Areas of Agreement / Disagreement

Participants generally agree that computational errors are a common issue and that they should not lead to drastic decisions about changing majors. However, there are differing opinions on the best strategies to mitigate these errors and the impact of testing platforms on student performance.

Contextual Notes

Some participants note that computational errors may arise from rushing through problems or lack of organization, but no consensus is reached on the best approach to avoid such mistakes.

Who May Find This Useful

Students in calculus or engineering courses, particularly those concerned about performance on exams and managing computational errors.

danerape
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Urgent! Advice Needed

I am currently taking calculus II, and didn't do so hot on the midterm yesterday. I had to take the test on webassign(proctored). The instructor says partial credit will be given, but my webassign score was a 50%. I did not have a problem with the calculus involved, but the problems given were very computaionally intensive. For example::

I had a solid of revolutions problem y=-x^2+12x-35, so I made a mistake somewhere squaring that, I also had a partial fractions problem with a denominator of (x-1)^2(x^2+1), and somewhere in the 4 equation 4 variable system I made a mistake, and the list goes on.

I guess my question is, has anyone bombed a test solely due to computational errors. My mechanics in solving these problems were 100% correct, I guess I just had a bad day. I got an A in precalc and cal I, so this is my first bad expeiriance. I know some did pretty well on the test, now I am just wondering if I should rethink my major?
 
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You're panicking for no reason. If you like the technology involved with electrical engineering, and you're comfortable with EE courses than stay.

If not, change.
 


If your methods and mechanics were 100% correct, then there's nothing to worry about. Computational errors are silly, they shouldn't be the reason for you to change your major :smile:

Just be more careful with the computations next time :smile:
 


danerape said:
I am currently taking calculus II, and didn't do so hot on the midterm yesterday. I had to take the test on webassign(proctored). The instructor says partial credit will be given, but my webassign score was a 50%. I did not have a problem with the calculus involved, but the problems given were very computaionally intensive. For example::

I had a solid of revolutions problem y=-x^2+12x-35, so I made a mistake somewhere squaring that, I also had a partial fractions problem with a denominator of (x-1)^2(x^2+1), and somewhere in the 4 equation 4 variable system I made a mistake, and the list goes on.

I guess my question is, has anyone bombed a test solely due to computational errors. My mechanics in solving these problems were 100% correct, I guess I just had a bad day. I got an A in precalc and cal I, so this is my first bad expeiriance. I know some did pretty well on the test, now I am just wondering if I should rethink my major?

Everyone has bad tests. Still, you must have made a lot of computational errors to receive a 50%. Were you rushing through the problems? If so, why?

I usually attribute computational errors to not being careful and organized. In this sense, I don't think your question about whether you should change your major follows from the the issues you're having. Choosing another major would only be a reasonable solution if you no longer have any interest in electrical engineering.
 


Next time just make sure to double check everything as you do the problem. I personally don't like to double check after I've finished the test, I found it much easier to force myself to double-check while I'm doing the problem.
 


If you like what you are studying, you should stick with it. But as you continue taking exams in engineering courses there will probably be many opportunities for computational errors. I might suggest that, whenever you are reading your textbooks or lecture notes, you work through all the steps of the math yourself as a way to continuously practice. You will probably become faster and more accurate.
 


Ended up with a 96% after partial credit. Maybe I should relax. Thanks!
 


WEBASSIGN SUCKS, does not give partial credit whatsoever
 

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