Recent content by DennisG

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    Algebra Help for Word Problems: Profit and Cost Analysis Explained

    Ok, so I feel like a big idiot for having to ask this but, my sister needed help with her algebra homework and I cannot for the life of me remember how to do these. I guess it's just the way the problems are worded. If anyone could help with an explanation for each problem so that I can explain...
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    Different techniques of integration

    hi, we're working on different techniques of integration and I just wanted to know if I got the right answer for this... \int\frac{x^3}{(x+1)^10} dx (the denominator should be raised to the tenth and not the 1 with a big zero after it, if someone could tell me how to raise it to a...
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    What is e^(pi*i) = - 1? Learn How to Solve it

    ok, so I saw this thing one time that looked like this: e^(pi*i) = - 1 can anyone tell me what this is, what it's used for, and especially how it works? A friend showed me the equation one time, but neither of us knew a thing about it. Thanks for any help you can offer...
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    How massive are the largest (dimensionally) particles?

    Yes, sub-atomic or inter-stellar particles.
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    How massive are the largest (dimensionally) particles?

    how massive are the largest (dimensionally) particles?
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    Determining N(i) of a Hydrogen Electron Transition

    An electron in the hydrogen atom makes a transition from an energy state of principle quantum number N(i) to the N=2 state. If the photon emitted has a wavelength of 434 nm, what is the value of N(i)? ...no idea
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    Modelling Salt and Water Flow in a Tank

    Are you sure about that tide? I could swear I tried that same thing, but I don't know, maybe I was just being an idiot. Thanks for the help
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    Modelling Salt and Water Flow in a Tank

    set up a differential equation to represent 2 tons of salt entering a 20 ton tank of water each minute while 2 tons of the mixture are drained each minute
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