Anonymous Functions in MATLAB

⚡ Anonymous Functions in MATLAB

They are widely used for quick calculations, callbacks, and functional programming.
MATLAB is developed by MathWorks.

🔹 What Is an Anonymous Function?

An anonymous function:

• Is defined using @

• Contains a single expression

• Is stored in a function handle

• Does not require a function file

1️⃣ Basic Syntax

2️⃣ Simple Anonymous Function

🔸 Example: Square of a Number

Output

3️⃣ Anonymous Function with Multiple Inputs

Output

4️⃣ Using Anonymous Functions with Arrays

Output

📌 Use element-wise operators (.^, .*, ./).

5️⃣ Anonymous Function with Built-in Functions

🔸 Using arrayfun

Output

6️⃣ Anonymous Function for Plotting

📌 Plots sine wave without creating a function file.

7️⃣ Passing Anonymous Function as Argument

Output

8️⃣ Anonymous Functions with Multiple Outputs (Not Allowed)

❌ Anonymous functions cannot return multiple outputs.

✔ Use normal functions for multiple outputs.

⚠️ Important Notes

• Limited to one expression

• Supports multiple inputs

• Very useful for short tasks

• Stored as function handles

🎯 Interview Questions: Anonymous Functions

🔹 Q1. What is an anonymous function in MATLAB?

Answer:
A one-line function defined without a function file using @.

🔹 Q2. What symbol is used to define an anonymous function?

Answer: @

🔹 Q3. Can anonymous functions have multiple inputs?

Answer: Yes.

🔹 Q4. Can anonymous functions return multiple outputs?

Answer: No.

🔹 Q5. Where are anonymous functions commonly used?

Answer: Callbacks, plotting, optimization, quick calculations.

🔹 Q6. What is a function handle?

Answer: A variable that stores a reference to a function.

🔹 Q7. Why use anonymous functions instead of normal functions?

Answer: For simplicity and quick one-line operations.

✅ Summary

• Anonymous functions are short and powerful

• No .m file required

• Defined using @

• Ideal for quick and inline operations