What is a pattern in Mathematica?

Patterns are used throughout the Wolfram Language to represent classes of expressions. A simple example of a pattern is the expression f[x_]. This pattern represents the class of expressions with the form f[anything].

What is a pure function in Mathematica?

The Wolfram Language lets you declare functions inline (called pure functions) to get around this. The most transparent way to define a pure function is with Function. The first argument is a list of arguments, and the second is a function. This function adds its two arguments together: Copy to clipboard.

What is Mathematica based on?

Mathematica uses a client-server model of computing. The front end and kernel are connected via MathLink—the same system as is used to communicate with other programs.

How do you find and replace in Mathematica?

You would open the Source popup menu in the Mathematica source editor by right-clicking and choosing Source > Expression Find/Replace. You would then fill in the dialog as follows. When you click Preview this allows you to preview all the changes that were introduced. From this you can accept or reject the changes.

How do you write a subscript in Mathematica?

Type a subscript with (Insert ▶ Typesetting ▶ Subscript). Exit from typing math with : Exit from a subscript but continue typing math with (Insert ▶ Typesetting ▶ End Subexpression): Typing a subscript in text automatically enters math mode.

How do you write not equal to in Mathematica?

Details

1. can be entered as x∖[NotEqual]y or x !=
2. lhs≠rhs returns True if lhs and rhs are determined to be unequal by comparisons between numbers or other raw data, such as strings.
3. Approximate numbers are considered unequal if they differ beyond their last two decimal digits.
4. gives True only if none of the ei are equal.

How do you enter Infinity in Mathematica?

(Type ESCinfESC for the ∞ symbol.) You can also specify the limit’s Direction.