# User Portlet

Valeriu Ungureanu
Discussions
You can use Mathematica's menu to find Alphabetical Listing of functions: Help -> Wolfram Documentation -> Index of Functions P.S. The button/link of Index of Functions is at the bottom of the Wolfram Documentation page.
You may define a function and use it: In[1]:= f[x_, y_, z_] := Defer[(x + y)/z] In[2]:= f[2, 3, 5] Out[2]= (2 + 3)/5
Hi Sergio, I propose you to verify the following code with Table[]: mo = 4/10 \[Pi]; \[Sigma] = 3533568905/100; w = 120 \[Pi]; h = 5/1000; const = (w mo \[Sigma] h^2)/(2. \[Pi]); ...
It seems that in the first case the second list is interpreted as a (non-correct) list of predecessors (see Documentation). As you give explicitly an edge in the second list, the second list is interpreted as a list of edges and all is ok. Why so? Is...
Hi Dia, I suggest to use for your notations lowercase letters. It is a convention in Wolfram Language for users to use names which begin with lowercase letters. So, we define the function $f[a]$, define user's parameters and plot the function: ...
It seems that you need simply all the implicit options for the Graphics3D: In[1]:= Options[Graphics3D] Out[1]= {AlignmentPoint -> Center, AspectRatio -> Automatic, AutomaticImageSize -> False, Axes -> False, AxesEdge ->...
You must correct an error in the second row - third column. It must be $b[[3]]$ instead of $b[{3]]$.
We can compute the Limit[] when s tends to infinity: In[1]:= Limit[f[1/5, 7, s, 11/100, 1/10], s -> \[Infinity]] // N Out[1]= 0.548733 Together with the fact that the derivative is non-negative, i.e. the function f is...
You may try the following approach: In[1]:= y[x_] := x^3 Sin[x] In[2]:= x y'[x] == 3 y[x] + x^4 Cos[x] // Simplify Out[2]= True
Dear Anil, You must copy the entire code and execute it.