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visits member for 2 years, 7 months
seen 19 mins ago

Code for my breathing avatar here


You may contact me at: BelisariusForSO@gmail.com

But please don't email me with requests about Q&A. Post them in the site instead.

Infix should be used only where it is essential... like in "feliz año nuevo" @rm-rf


1h
comment How to find this limit correctly?
@MarkMcClure Yes, you may assume you're on your iPhone :)
1h
comment Driven SHO - amplitude of steady state motion
Note: In the general case a more careful condition is needed in the /; clause while calculating lim. The current condition is enough for this problem since there are no non-vanishing constant terms in the Limit[]
1h
comment How to find this limit correctly?
@MarkMcClure ListLinePlot@ Block[{$MaxExtraPrecision = 1000}, Table[N[n*Sin[2*Pi*E*n!], 100], {n, 0, 400}]]
5h
comment Symbolically solving a system of nonlinear equations
Try the code of my previous comment again (I modified it) and take a look at the results... they aren't so simple. Also beware of specifying your constants as Integers or Rationals.
5h
comment Symbolically solving a system of nonlinear equations
ClearAll[sigma1, sigma2]; alpha = 3; A = 2; Solve[ x (1 - (y/(1 + y))) == ((1 - alpha) A y^alpha - alpha A y^(alpha - 1))/sigma1 && 1 - x == (725/10^4 - alpha A y^(alpha - 1))/sigma2, {x, y}]
6h
comment Symbolically solving a system of nonlinear equations
alpha = 1; A = 1; sigma1 = 1; sigma2 = 1; Solve[ x (1 - (y/(1 + y))) == ((1 - alpha) A y^alpha - alpha A y^(alpha - 1))/sigma1 && 1 - x == (725/10^4 - alpha A y^(alpha - 1))/sigma2, {x, y}]
10h
comment 3D Contour Plot - parts with gradients less and more than zero
If you say so ..
10h
comment Graph and Markov Chain
@LuizRobertoMeier ToExpression@StringReplace[ToString@FullForm@h, "Tooltip" :> ".1"]
10h
comment Use Mathematica to calculate the area enclosed between two curves
@MarkMcClure ya know: "your programming style mirrors your mind"
10h
comment 3D Contour Plot - parts with gradients less and more than zero
AFAIS deriv2 is Complex ...
17h
comment PDE with Stefan Conditions, a.k.a variable boundary
sciencedirect.com/science/article/pii/S0307904X05001150
19h
comment How to create an adjustable Bézier curve?
+1 for hopefully helpful :)
20h
comment approximate value for the area between the curve
@eldo Done. Perhaps I found a way to alleviate the confusion.
20h
comment approximate value for the area between the curve
@eldo Since the function proposed by the OP is constant, all Riemann sums are equal. I didn't include the numerical results because I thought they could bring some confusion.
22h
comment Use MATHEMATICA to calculate the volume of the solid
Please post your ideas and tell us where you got stuck. Otherwise you're just asking for somebody to do your homework (And your TA could be around!)
1d
comment Real and Imaginary parts of solutions to a complex linear ODE system
Please post your code using JordanDecomposition and MatrixExp for completeness
1d
comment Graph and Markov Chain
@LuizRobertoMeier Thanks. Anyway, I recommend waiting a few hours before accepting an answer. An open question always attract more attention and you may get more and better answers
1d
comment Finding minimum value of an integrated function over an interval
This exact question has been asked yesterday. math.stackexchange.com/q/914613/2731
1d
comment Computing the Hurst exponent or fractal dimension of fractional Brownian motion
I edited your code for readability. Please undo the edit if you disagree
1d
comment Computing the Hurst exponent or fractal dimension of fractional Brownian motion
What is R[] ?