# Tag Info

Accepted

### How to fit function with data?

Provide initial estimates for a and b ...

### Animation of a spring pendulum

Here is the corrected code: ...

### How to fit function with data?

NonlinearModelFit default settings work ok with simpler model and thena and b can be derived,...

### How to fit function with data?

Use a better search method: ...
Accepted

### Plot solution of an integral with parameter

Using $\frac {d\phi}{dr}$ and Ueff from the paper we have ...
Accepted

### Change of variable of a numerically solved integral

Perhaps onedimensional plot is sufficient? Plot[Int[b], {b, 0, 5}, ColorFunction -> Hue,PlotStyle -> Thickness[Large]] or using ...

### Animating a double spring spherical pendulum

Parameters k1=k2=5 are too small, let take k1=k2=50 then we have ...

### Animation of double pendulum with a spring (3DOF)

Here my solution parameters (changed k !) m1 = 1; m2 = 1; l1 = 1; l2 = 1; k =100(* 1/10*); g = 9.81; geometry ...
1 vote
Accepted

### Value of a function over permutations of two lists

You can do the multiplications more efficiently without needing Sum. ...
1 vote

### Sum on a lattice where variables can only take two values (Ising lattice gauge theory)

One option is to specify each node as a pair of integers, {x,y}. You might also consider placing your spins at the nodes rather than on the edges. There will be four spins/plaquette either way, and ...
1 vote

### Plot after applying NIntegrate

int is producing seemingly random numbers because AccuracyGoal -> 5, PrecisionGoal -> 4 are too small. Increasing the ...

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