find the logarithm of a number in typescript

To find the logarithm of a number in TypeScript, you can use the Math.log() method. This method returns the natural logarithm (base e) of a number.

Here is an example code snippet:

index.ts
const num: number = 10;
const log: number = Math.log(num);
console.log(`Logarithm of ${num} is ${log}`);
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In this example, we first define a number num and then use Math.log() method to calculate its logarithm. The result is then stored in log variable and printed to the console using console.log() method.

If you want to calculate the logarithm of a number with a different base, you can use the following formula:

index.ts
log_a(x) = log_e(x) / log_e(a)
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where log_a(x) is the logarithm of x with base a, log_e(x) is the natural logarithm of x, and log_e(a) is the natural logarithm of a.

Here's an example code snippet that calculates the logarithm of a number with base 2:

index.ts
const num: number = 8;
const base: number = 2;
const log: number = Math.log(num) / Math.log(base);
console.log(`Logarithm of ${num} with base ${base} is ${log}`);
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In this example, we first define the num and base variables, and then use the formula above to calculate the logarithm with base 2. The result is stored in log variable and printed to the console.