|
1.1.1 Arithmetic
You can do arithmetic with Mathematica just as you would on an electronic calculator.
This is the sum of two numbers.
In[1]:= 2.3 + 5.63
Out[1]= 
Here the / stands for division, and the ^ stands for power.
In[2]:= 2.4 / 8.9 ^ 2
Out[2]= 
Spaces denote multiplication in Mathematica. You can use a * for multiplication if you want to.
In[3]:= 2 3 4
Out[3]= 
You can type arithmetic expressions with parentheses.
In[4]:= (3 + 4) ^ 2 - 2 (3 + 1)
Out[4]= 
Spaces are not needed, though they often make your input easier to read.
In[5]:= (3+4)^2-2(3+1)
Out[5]= 
Arithmetic operations in Mathematica.
Arithmetic operations in Mathematica are grouped according to the standard mathematical conventions. As usual, 2 ^ 3 + 4, for example, means (2 ^ 3) + 4, and not 2 ^ (3 + 4). You can always control grouping by explicitly using parentheses.
This result is given in scientific notation.
In[6]:= 2.4 ^ 45
Out[6]= 
You can enter numbers in scientific notation like this.
In[7]:= 2.3 10^70
Out[7]= 
Or like this.
In[8]:= 2.3*^70
Out[8]= 
THIS IS DOCUMENTATION FOR AN OBSOLETE PRODUCT. SEE THE DOCUMENTATION CENTER FOR THE LATEST INFORMATION. | 
