# Are all functions computable?

## Are all functions computable?

Every such function is computable. It is not known whether there are arbitrarily long runs of fives in the decimal expansion of π, so we don’t know which of those functions is f. Nevertheless, we know that the function f must be computable.)

## What is decidable and undecidable problems?

A problem is said to be Decidable if we can always construct a corresponding algorithm that can answer the problem correctly. It is also important to know that these problems are termed as Turing Decidable since a Turing machine always halts on every input, accepting or rejecting it.

## What does it mean for a problem to be undecidable?

In computability theory and computational complexity theory, an undecidable problem is a decision problem for which it is proved to be impossible to construct an algorithm that always leads to a correct yes-or-no answer.

## How problem can be reduced into a Decidable problem?

Any decidable problem can be reduced to the halting problem. Take a machine M that decides some language L. Now produce a new Turing machine M′ that behaves identically to M except that, if M rejects, M′ loops forever. Rather, it proves that every decidable language is itself recognizable.

## What are the two types of reduction?

As described in the example above, there are two main types of reductions used in computational complexity, the many-one reduction and the Turing reduction.

## What is problem reduction in AI?

We already know about the divide and conquer strategy, a solution to a problem can be obtained by decomposing it into smaller sub-problems. Each of this sub-problem can then be solved to get its sub solution. That is called is Problem Reduction. …

## How do you write big O notation?

With Big O notation, we use the size of the input, which we call ” n.” So we can say things like the runtime grows “on the order of the size of the input” ( O ( n ) O(n) O(n)) or “on the order of the square of the size of the input” ( O ( n 2 ) O(n^2) O(n2)).

## How do you reduce time complexity in Python?

1. Get the whole setup ready before-hand. This is common sense. Get the whole setup ready.
2. Get the code working first. People have their own coding styles. Use the coding style that you are most comfortable with.
3. Python Coding Tips. We can use some pythonic code constructs that give us better performance.

## What is reduction in simple words?

Reduction is a chemical reaction that involves the gaining of electrons by one of the atoms involved in the reaction between two chemicals. The term refers to the element that accepts electrons, as the oxidation state of the element that gains electrons is lowered. This is called redox.

## What is the difference between oxidation and reduction?

Oxidation is a reaction that removes an electron from a substance, reduction is a reaction that adds electrons to a substance.

## What is the difference between reduction and prevention?

Answer: Prevention is to prevent something that is happening so that it will not happen again. And reduction is to stop or interrupt something that happened or is continuing to happen.

## What is preventive risk?

Risk prevention methods include all techniques and management practices that help to prevent unnecessary or foreseeable risks. Essentially, they generally include all of the methods that increase the quality (and thus reduce financial and other risks), planning methods, forecasting, and the use of best practices.

## What is reflection Brainly?

Answer: Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated. Common examples include the reflection of light, sound and water waves. cliffffy4h and 1 more users found this answer helpful. Thanks 1.

## What is the difference between reflection and refraction Brainly?

Answer. reflection : when light ray hits a surface it bounces back -this is reflection. when light changes it direction slightly when it moves from one medium to another is called refraction.

## Why is doing philosophy in a form of reflection important?

Answer: The use of philosophical reflection is important as it enables thought to be looked into using a deeper, holistic perspective. In effect, actions are directed towards greater sources of wisdom and truth. In the process, one can learn more about himself or herself, including personal beliefs, ideals, or values.

## What is primary reflection?

Primary reflection examines its object by abstraction, by analytically breaking it down into its constituent parts. It is concerned with definitions, essences and technical solutions to problems. In contrast, secondary reflection is synthetic; it unifies rather than divides.

## What is the value of doing philosophy in your life as a student?

This is both because philosophy touches so many subjects and, especially, because many of its methods can be used in any field. The study of philosophy helps us to enhance our ability to solve problems, our communication skills, our persuasive powers, and our writing skills.