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# Calculate exponential of a value in Julia – exp(), exp10(), exp2(), expm1() and frexp() Methods

• Last Updated : 26 Mar, 2020

The `exp()` is an inbuilt function in julia which is used to calculate the natural base exponential of the specified number.

Syntax: exp(x)

Parameters:

• x: Specified values.

Returns: It returns the calculated natural base exponential of the specified number.

Example:

 `# Julia program to illustrate ``# the use of exp() method`` ` `# Getting the natural base exponential``# of the specified number.``println(exp(``0``))``println(exp(``1``))``println(exp(``5``))``println(exp(``-``1``))`

Output:

```1.0
2.718281828459045
148.4131591025766
0.36787944117144233
```

#### exp10()

The `exp10()` is an inbuilt function in julia which is used to calculate the base 10 exponential of the specified number.

Syntax: exp10(x)

Parameters:

• x: Specified values.

Returns: It returns the calculated base 10 exponential of the specified number.

Example:

 `# Julia program to illustrate ``# the use of exp10() method`` ` `# Getting the base 10 exponential``# of the specified number.``println(exp10(``0``))``println(exp10(``1``))``println(exp10(``10``))``println(exp10(``-``1``))`

Output:

```1.0
10.0
1.0e10
0.1
```

#### exp2()

The `exp2()` is an inbuilt function in julia which is used to calculate the base 2 exponential of the specified number.

Syntax: exp2(x)

Parameters:

• x: Specified values.

Returns: It returns the calculated base 2 exponential of the specified number.

Example:

 `# Julia program to illustrate ``# the use of exp2() method`` ` `# Getting the base 2 exponential``# of the specified number.``println(exp2(``0``))``println(exp2(``1``))``println(exp2(``2``))``println(exp2(``-``1``))`

Output:

```1.0
2.0
4.0
0.5
```

#### expm1()

The `expm1()` is an inbuilt function in julia which is used to accurately calculate .

Syntax: expm1(x)

Parameters:

• x: Specified values.

Returns: It returns the calculated value of .

Example:

 `# Julia program to illustrate ``# the use of expm1() method`` ` `# Getting the accurate value``# of given expression``println(expm1(``0``))``println(expm1(``1``))``println(expm1(``2``))``println(expm1(``-``1``))`

Output:

```0.0
1.718281828459045
6.38905609893065
-0.6321205588285577
```

#### frexp()

The `frexp()` is an inbuilt function in julia which is used to return (x, exp), where x is given and having a magnitude in the interval [1/2, 1) or 0.

Syntax: frexp(x)

Parameters:

• x: Specified values in the interval [1/2, 1) or 0.

Returns: It returns (x, exp), where x is given and having a magnitude in the interval [1/2, 1) or 0.

Example:

 `# Julia program to illustrate ``# the use of frexp() method`` ` `# Getting (x, exp), where``# x is given and having a magnitude``# in the interval [1 / 2, 1) or 0.``println(frexp(``0.6``))``println(frexp(``0.5``))``println(frexp(``0.7``))``println(frexp(``0.9999``))`

Output:

```(0.6, 0)
(0.5, 0)
(0.7, 0)
(0.9999, 0)
```

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