Let's say that the custom_power function took around 600 nanoseconds to execute. We can now compare with program 2.

Program 2:

Let’s now use the Python’s built-in pow function to raise 3 to the power 4 and see how much time it ultimately takes.

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var start = new Date().getTime();

console.log(Math.pow(3, 4));

var end = new Date().getTime();

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console.log(`Call to customPower took ${end - start} milliseconds`);