Recent content by daigo

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    Angry with so much time spent studying

    Hi jedishrfu, Aero51, genericusrnme, and again E_M_C and tiny-tim. I technically can do all of the related rates problems that I recognize/have seen before, again through mechanical means. As another example in statistics, you may recognize: 1% of women age 40 who get tested for breast cancer...
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    Angry with so much time spent studying

    Hi E_M_C, (i) Physics, (ii) for preparation, I study the topics in the syllabus beforehand so I know what the class will be about. Afterwards, if I don't have another class soon, I will study it again. (iii) Yes, someone who can explain the concepts to me in a manner that I can easily understand...
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    Angry with so much time spent studying

    Hi tiny-tim. Before I began college, I had already set aside a few years to study/brush up on my own personal remedial courses. After those years of studying, there are still some things in Algebra I do not understand. I don't think I should hold myself back even longer for just those small...
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    Angry with so much time spent studying

    I started college late, but I still behave like a child before my first day of classes, meaning I have trouble sleeping the night before because I am too excited about learning, especially maths/science. When I do well in my classes, I feel even more encouraged to study harder and learn more...
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    Can You Solve These Challenging Job Interview Questions?

    FIG @ GS, memory Didn't ask for solutions, just wanted to discuss the aspects of getting jobs at these types of firms. Here's some others asked at another company: How many ridges are on a quarter? How many libraries are in the U.S.? How many traffic lights are in Manhattan? Rank yourself...
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    Can You Solve These Challenging Job Interview Questions?

    These came up for a job interview and they had to be answered relatively quickly (most of them should be answered within one minute): How many could you answer and how quickly?
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    Algebraic Rate Problem: Finding Time for Bob to Reach Charlie

    The solution process says that: (12)R_A = (12)R_C + 400 So in 12 minutes when Andy reaches Charlie, doesn't Andy need to cross: 100 ft + Bob's covered distance + 400 ft. + Charlie's covered distance? How come Bob's distance is omitted entirely? It seems like Andy just skipped over Bob and only...
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    Algebraic Rate Problem: Finding Time for Bob to Reach Charlie

    Sorry, I fixed the problem. I have been working on it since yesterday and I still don't understand any of it, even when looking at the solution so I'm a little frustrated.
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    Algebraic Rate Problem: Finding Time for Bob to Reach Charlie

    Homework Statement Andy is 100 feet from Bob and Bob is 300 feet from Charlie and they are all facing the same direction on the same line. They all begin to move in the same direction that they are facing at relative constant speeds. In 6 minutes, Andy reaches Bob, and in another 6 minutes...
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    Solve Algebra Rate Problem: Dragon Walking & Car Driving

    Homework Statement Homework Equations distance = rate * time The Attempt at a Solution I thought I could put it into a ratio like this: (r = rate) x / r = 100 ft / 3r Cross multiply: 3rx = 100r Divide by r on both sides: 3x = 100 x = 100/3 But then I figured...
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    Digital Scratch Pad for Math/Physics Students

    I guess tablets are expensive because of all the extra features...I don't need any software/programs or internet/wifi on the thing, but if old school writing on looseleaf is still faster than this tablet thing, then I guess I'll stick to killing trees for now.
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    Digital Scratch Pad for Math/Physics Students

    I use a LOT of paper to do scratch work for school (math/physics especially). Instead of using so much paper, is there a digital version of paper where I can maybe use a stylus-type utencil as a digital writing tool for the "digital paper" and erase easily/prevent accidental erasures, maybe some...
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    Solve Quadratic Trinomials w/Large Coeffs: Factoring Tips

    I'm told that factoring is an important skill in calculus so I am avoiding using the quadratic formula. But for quadratic equations with large coefficients to factor, is there a better/faster way rather than guessing and checking every single combination?
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    [Algebra] Workload (rate) problems

    [Algebra] "Workload" (rate) problems Intuitively, I don't even understand how the basic Q = rt works. For a simpler problem, such as: Sarah takes 10 minutes to mow a single lawn and Jessica takes 15 minutes to mow that same lawn, apparently the algebra is: (1/10) + (1/15) = 1/t For the...
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