How to work with “Mathematica”
Here is a sample calculation. Your cursor can be anywhere in the input cell
when you press . The In[n]:= and Out[n]= labels are added
automatically.
In[1]:= 5+3
Out[1]= 8
You can edit existing input and press  to re-evaluate it. The new result
replaces the old one in the output cell.
Get started just like using a calculator
To interact with Mathematica, type in your input, then press  to get your
output. If you press  on its own, you just go to a new line. In the example
below, the ^ indicates the operation of taking a power.
In[2]:= 19^50
Out[2]= 8663234049605954426644038200675212212900743
If you put an explicit decimal point in your input, then Mathematica gives
you an approximate numerical result. Very large and very small numbers are
then shown in exponential notation.
In[3]:= 19.^50
Out[3]= 8.66323  1063
Use either a space or an explicit * to indicate multiplication.
Summary of important Mathematica notation
All built-in functions start with a capital letter.
Abs
Use [ ] to enclose function arguments.
Mod 7, 3
Use {} to enclose list elements.
Use () to indicate grouping of terms.
expr/.x
y means “in expr replace x by y”.
22
1, 2, 3
a
bc
p^2 . p
2
Use = to assign a value to a variable.
y
3.8
Use == to express equality.
Solve x^2
Use := to define a function.
f x_ : x^2
Use x_ to indicate an arbitrary expression named x.
f x_ : x^2
3, x
,‫העזרה בתוכנה יעילה מאוד ומכילה דוגמאות והסברים על כל הפונקציות המובנות‬
.‫כדאי מאוד ללמוד להשתמש בה‬
...‫וכמובן שתמיד אפשר לשאול‬