Practice Non-constructive Proofs (8.4) - Uncomputable Functions - Discrete Mathematics - Vol 2
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Non-constructive Proofs

Practice - Non-constructive Proofs

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Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

Define a computable function.

💡 Hint: Think about whether you can write a program for it.

Question 2 Easy

What does it mean if a function is uncomputable?

💡 Hint: Consider the implications of a program not existing for that function.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What defines a computable function?

A function with no program
A function computable by a program
A function that always produces an output

💡 Hint: Consider if you can find a program for it.

Question 2

True or False: All functions are computable.

True
False

💡 Hint: Think of examples like the Halting Problem.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Using Cantor's argument, prove that the set of all functions from {1,2,3,...} to {0,1} is uncountable.

💡 Hint: Reflect on how listing elements could lead to missing at least one function.

Challenge 2 Hard

Discuss the implications of the Halting Problem within programming and computation limits.

💡 Hint: Consider programming tasks where it's impossible to predict behavior.

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