In Haskell, you can perform basic arithmetic operations such as addition, subtraction, multiplication, and division using simple expressions. Here's how you can do each operation:

**Addition**: To add two numbers, you can simply write a plus symbol (+) between them. For example:

```
1
``` |
```
result = 2 + 3 -- Assigns the sum of 2 and 3 to the variable 'result'
``` |

**Subtraction**: To subtract one number from another, use the minus symbol (-). For example:

```
1
``` |
```
result = 5 - 2 -- Assigns the difference between 5 and 2 to the variable 'result'
``` |

**Multiplication**: To multiply two numbers, use the asterisk symbol (*). For example:

```
1
``` |
```
result = 4 * 6 -- Assigns the product of 4 and 6 to the variable 'result'
``` |

**Division**: To divide one number by another, use the forward slash symbol (/). For example:

```
1
``` |
```
result = 10 / 2 -- Assigns the quotient of dividing 10 by 2 to the variable 'result'
``` |

These basic arithmetic operations can be used within larger Haskell programs to perform calculations and manipulate data. Remember to assign the result of the operation to a variable if you want to store and use it later.

## How to compute the factorial of a number in Haskell?

Here is a simple way to compute the factorial of a number in Haskell:

1 2 3 |
factorial :: Integer -> Integer factorial 0 = 1 factorial n = n * factorial (n - 1) |

In this implementation, we first define a factorial function that takes an Integer as input and returns an Integer as output.

We use pattern matching to handle the base case, where the factorial of 0 is defined as 1.

For any other positive integer input, we compute the factorial by multiplying the number with the factorial of the previous number (n - 1). This recursive calculation continues until the base case is reached.

You can use this function by calling `factorial`

with the desired number as an argument. For example, to compute the factorial of 5, you would call `factorial 5`

, which would return the value 120.

## How to check if one number is greater than another in Haskell?

In Haskell, you can use the comparison operators like `>`

to check if one number is greater than another. Here's an example:

1 2 3 4 5 |
compareNumbers :: Int -> Int -> String compareNumbers x y | x > y = "x is greater than y" | x < y = "x is smaller than y" | otherwise = "x is equal to y" |

In this example, the `compareNumbers`

function takes two arguments `x`

and `y`

. If `x`

is greater than `y`

, it returns the string `"x is greater than y"`

. If `x`

is smaller than `y`

, it returns the string `"x is smaller than y"`

. Otherwise, if `x`

is equal to `y`

, it returns the string `"x is equal to y"`

.

You can use this `compareNumbers`

function like this:

1 2 3 4 |
main :: IO () main = do let result = compareNumbers 5 3 putStrLn result |

This will output `"x is greater than y"`

since `5`

is greater than `3`

.

## How to determine the minimum of two numbers in Haskell?

In Haskell, you can determine the minimum of two numbers using the built-in `min`

function. Here's how you can do it:

1 2 |
min :: (Ord a) => a -> a -> a min a b = if a <= b then a else b |

The `min`

function takes two arguments, `a`

and `b`

, and returns the smaller of the two. Here's an example of how to use it:

1 2 3 4 5 |
main = do let num1 = 5 num2 = 3 result = min num1 num2 putStrLn ("The smaller number is: " ++ show result) |

This will output: "The smaller number is: 3", since `num2`

is smaller than `num1`

.

## What is the function for calculating the tangent of an angle in Haskell?

The function for calculating the tangent of an angle in Haskell is `tan`

from the `Prelude`

module.

```
1
``` |
```
tan :: Floating a => a -> a
``` |

This function takes an angle in radians as input and returns the tangent of that angle. The `Floating`

typeclass constraint ensures that the input and output values are of a type that supports floating point operations.

## What is the operator for comparison (equal to) in Haskell?

The operator for comparison (equal to) in Haskell is `==`

.