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How to express nth power in c++

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Release: 2024-05-01 11:09:14
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There are three ways to express nth power in C: power operator (base^exponent), pow() function (pow(base, exponent)) and using exp() and log() functions (exp (exponent * log(base)) to convert the base).

How to express nth power in c++

The nth power in C represents

In C, n times can be expressed in the following ways Method:

1. Power operator

Syntax: base^exponent

Among them:

  • base: The number to be exponentiated.
  • exponent: The power to be taken.

For example:

<code class="cpp">double x = 2.5;
double y = x^3; // y = 2.5^3 = 15.625</code>
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2. pow() Function

Syntax: pow(base , exponent)

Among them:

  • base: The number to be exponentiated.
  • exponent: The power to be taken.

This function has the same functionality as the power operator.

For example:

<code class="cpp">double x = 2.5;
double y = pow(x, 3); // y = 2.5^3 = 15.625</code>
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3. Use exp() and log() functions

Syntax: exp(exponent * log(base))

Among them:

  • base: The number to be exponentiated.
  • exponent: The power to be taken.

This method calculates the nth power by converting the base to a power of base 10.

For example:

<code class="cpp">double base = 2.5;
double exponent = 3;
double result = exp(exponent * log10(base)); // result = 2.5^3 = 15.625</code>
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