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 Nov11 comment Plotting a Function J.M.: I would like the trajectories to be displayed along the xyz axis. Parametric places it inside of a volume, (rectangle). Nov11 asked Plotting a Function Nov8 answered Mathematics and Music Oct17 comment Second order ODE @anon: Is is not $n-1$ conditions for a $n^{\text{th}}$ order equation. Oct17 revised Second order ODE fixed grammar Oct17 suggested approved edit on Second order ODE Oct17 revised How to Evaluate $\int \! \frac{dx}{1+2\cos x}$ ? added 2 characters in body Oct17 accepted How to Evaluate $\int \! \frac{dx}{1+2\cos x}$ ? Oct17 comment How to Evaluate $\int \! \frac{dx}{1+2\cos x}$ ? Thanks. Seems I did the same exact thing, I think I just messed up with the simplification after making the $\cos x$ and $\mathrm{d}x$ substitution. Good work. I will go back and make sure I get $\int \! \frac{2}{3-t^2}\,\mathrm{d}t$. Do you not get $-\int \! \frac{2}{t^2-3}$ after simplifying? Is there something I'm not seeing you pulled out? Oct17 asked How to Evaluate $\int \! \frac{dx}{1+2\cos x}$ ? Oct3 answered Numerical software to solve partial differential equations in spherical coordinates? Oct1 awarded Civic Duty Sep12 accepted Describing a Wave Sep12 comment Describing a Wave Anon, Okay, I understand. I was trying to say what needs to be changed to accommodate for the x-axis to be $4$ milli seconds instead of just 4, to keep the wave still showing how it is. So, i.e., $x$-axis goes from 0 to 0.004. Sep12 comment Describing a Wave Anon, how would you adjust the factor $8$ and others if needed, to accommodate for the time axis being $4$ms instead of $4$? Sep11 comment Describing a Wave Very much appreciated and as you should for referring back to. We could all learn and benefit from different methods for accomplishing the same results. :) Sep11 comment Describing a Wave Anon, Brilliant! I did not see this with the use of the square wave. Ingenious answer. I was thinking its some sine wave of some angular frequency * some function to get that negative part of the wave. But very nice. How did you analyze this so fast? :) I'm just curious. hehe Sep11 comment Describing a Wave J.M. +1... Very nice thought there. What made you see this?, using the tool of the floor function. Which part of the floor actually affects the wave? Sep11 comment Describing a Wave Percusse, thanks. I see where you were trying to go with this but thanks anyway. This is an insightful way to think of it and I will see if I can finish what you started. :) Sep11 asked Describing a Wave