Python Coding challenge - Day 562| What is the output of the following Python Code?

 

Code Explanation:

1. Function Definition: merge(f, g)

def merge(f, g):

    return lambda x: f(x) - g(x)

This defines a function merge that takes two functions as input: f and g.

It returns a new function (a lambda) that takes one argument x.

This lambda computes:

f(x) - g(x)

i.e., it applies both functions to x, and subtracts the result of g(x) from f(x).

2. Defining Function f

f = lambda x: x * 3

This defines f as a lambda function that takes a number x and returns x * 3.

For example:

f(2) → 2 * 3 → 6

3. Defining Function g

g = lambda x: x + 4

This defines g as a lambda function that takes a number x and returns x + 4.

For example:

g(2) → 2 + 4 → 6

4. Creating a New Function h Using merge

h = merge(f, g)

This calls the merge function with f and g.

merge(f, g) returns a new function that computes: f(x) - g(x)

So, h(x) now means: f(x) - g(x) → x*3 - (x+4)

5. Evaluating h(2)

print(h(2))

Let's compute step by step:

f(2) → 2 * 3 → 6

g(2) → 2 + 4 → 6

So, h(2) = f(2) - g(2) = 6 - 6 = 0

Therefore, the result printed is:

0

Final Output

0

Download Book - 500 Days Python Coding Challenges with Explanation