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Chapter 3: Problem 24

The __________ library function returns the natural logarithm of a number.

Short Answer

Expert verified
Answer: The library function that returns the natural logarithm of a number is called "log" from the math library. To use it, first import the math library using `import math`. Then, use the "log" function, passing the given number as an argument like `math.log(x)`, where `x` is the given number. The function will return the natural logarithm of the given number.

Step by step solution

01

Identify the library function

The library function that returns the natural logarithm of a number is called "log" from the math library in most programming languages. In Python, for example, it can be used by importing the "math" module and calling the "math.log()" function.
02

Import the math library

To use the "log" function, we first need to import the math library in our program. In Python, this can be done with the following line of code: ```python import math ```
03

Calculate the natural logarithm

Now that we have imported the math library, we can use the "log" function to calculate the natural logarithm of a number 'x'. The function takes the number as an argument and returns the natural logarithm. Here's an example of how to use the function to calculate the natural logarithm of the number 5: ```python import math x = 5 natural_logarithm = math.log(x) print("The natural logarithm of", x, "is:", natural_logarithm) ``` In this example, we used the "log" function inside the 'math' module to calculate the natural logarithm of the number 5. The result is stored in the variable 'natural_logarithm', and it is printed at the end of the program.

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Most popular questions from this chapter

include using namespace std; #define WHO "Columbus" #define DID "sailed" #define WHAT "the ocean blue." int main() { const int WHEN = 1492; cout << "In " <… # #include using namespace std; #define WHO "Columbus" #define DID "sailed" #define WHAT "the ocean blue." int main() { const int WHEN = 1492; cout << "In " << WHEN << " " << WHO << " " << DID << " " << WHAT << endl; return 0; }

include ; using namespace std; int main() { char name, go; cout << "Enter your na… # Each of the following programs has some errors. Locate as many as you can. #include ; using namespace std; int main() { char name, go; cout << "Enter your name: "; cin >> setw(20); cin.getline >> name; cout << "Hi " << name << endl; cout "Press the ENTER key to end this program."; cin >> go; return 0; }

The __________ library function returns the square root of a number.

The __________ library function returns the value of a number raised to a power.

include ; using namespace std; main { int number1, number2; cout << "Enter two nu… # Each of the following programs has some errors. Locate as many as you can. #include ; using namespace std; main { int number1, number2; cout << "Enter two numbers and I will multiply\n" cout << "them by 50 for you.\n" cin >> number1 >> number2; number1 =* 50; number2 =* 50; cout << number1 << " " << number2; return 0; }
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