Recent content by jianxu
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Undergrad How to Scale a Pareto Distribution Between 0 and 1?
Hello, Thanks for the reply and sorry for the confusion. I think a pareto like distribution from 0 to 1 is what I'm going for. So would I just have it be bounded between 0 and 1? Thanks!- jianxu
- Post #3
- Forum: Set Theory, Logic, Probability, Statistics
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Undergrad How to Scale a Pareto Distribution Between 0 and 1?
Hello and thank you for taking the time to read this. I am making a number generator that generates a number based on a pareto distribution. The problem is, the distribution essentially goes from 0 to infinity. How would I go about scaling the values so I get a range between 0 and 1...- jianxu
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- Scaling
- Replies: 3
- Forum: Set Theory, Logic, Probability, Statistics
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Complex Number, properties of moduli
Well what confused me is the inequality. I understood the expression when it has the equal sign, but the problem that was given was |z+i| \leq 3 so I was trying to find a way to change it into simply an equals sign. Thanks, I see what you mean now. Do you have any advice on approaching a...- jianxu
- Post #7
- Forum: Calculus and Beyond Homework Help
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Complex Number, properties of moduli
Yes that makes sense but how do I show that graphically? I tried changing it to \left.|z| + i = 3 is simply because I thought that would help make graphing it easier? Could I also say it is a circle with the radius of 3-i? So should I be transforming these z's into their components such that...- jianxu
- Post #5
- Forum: Calculus and Beyond Homework Help
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Complex Number, properties of moduli
Thanks for the reply! I understand what you mean, but would that be the extent of "showing". I guess sometimes I'm just not sure how to properly write these proof type problems. On a somewhat related note, I'm suppose to graph \left.|z+i|\leq3 and \left.|z+i|\geq3 I know that normally, if...- jianxu
- Post #3
- Forum: Calculus and Beyond Homework Help
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Complex Number, properties of moduli
Homework Statement Hello! I'm lost on how to start this, I've got formulas given to me from the text, but I have no idea on how to piece everything together. So I need to use established properties of moduli to show that when \left.\left|z_{3}\right|\neq\left|z_{4}\right|, then...- jianxu
- Thread
- Complex Complex number Properties
- Replies: 6
- Forum: Calculus and Beyond Homework Help
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Fourier transform with mixed derivatives/ 2nd order ODE
Hello! I've been working on this problem and was wondering if someone could check if I've done the rest of this problem correctly! So after finding the roots, I apply the initial conditions where: \left.\widehat{u}\left(\omega,0\right) = \widehat{f}\left(\omega\right) since t = 0, I...- jianxu
- Post #4
- Forum: Calculus and Beyond Homework Help
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Fourier transform with mixed derivatives/ 2nd order ODE
Hi TinyTim, thanks for the reply! I just realized where I made my mistake! Thanks very much for the help!- jianxu
- Post #3
- Forum: Calculus and Beyond Homework Help
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Fourier transform with mixed derivatives/ 2nd order ODE
Homework Statement Hi, So I'm suppose to solve the following problem: \left.\frac{d^{2}u}{dt^{2}}-4\frac{d^{3}u}{dt dx^{2}}+3\frac{d^{4}u}{dx^{4}}=0 \left.u(x,0) = f(x) \left.\frac{du}{dt}(x,0) = g(x) Homework Equations The Attempt at a Solution First I use Fourier transform on...- jianxu
- Thread
- 2nd order Derivatives Fourier Fourier transform Mixed Ode Transform
- Replies: 3
- Forum: Calculus and Beyond Homework Help
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Solving for non moving points of a 1-D wave
regardless... Thank you very much for being so patient. It makes sense how you approached this problem now. once again, Thanks! :P- jianxu
- Post #38
- Forum: Calculus and Beyond Homework Help
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Solving for non moving points of a 1-D wave
It definitely does not. So I did a bad job in choosing the appropriate time interval then? My graphs definitely made me think I'd be getting answers for nonmoving x values...- jianxu
- Post #37
- Forum: Calculus and Beyond Homework Help
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Solving for non moving points of a 1-D wave
That's because we were to graph 10 plots at various t, I decidedly went t=1..10 and from the graphs the roots looked stationary Also I had the impression that the problem would've been simpler in terms of all the trig stuff...- jianxu
- Post #35
- Forum: Calculus and Beyond Homework Help
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Solving for non moving points of a 1-D wave
yes but...so am I suppose to say that even though they seem to be stationary, that's not the case since they will be dependent on beta?- jianxu
- Post #33
- Forum: Calculus and Beyond Homework Help
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Solving for non moving points of a 1-D wave
yes heh, considering I don't know how to get maple to do anything correctly, what are some alternatives to find the roots? Thanks- jianxu
- Post #31
- Forum: Calculus and Beyond Homework Help
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Solving for non moving points of a 1-D wave
so to solve for the roots then, would just plain old factoring be the best way?- jianxu
- Post #29
- Forum: Calculus and Beyond Homework Help