How to calculate the square root by computer?

Method 1: Use a calculator. In engineering calculation, in order to calculate the square root quickly and conveniently, calculators are generally used. For example, 2.456 under the root number, enter the root number with a calculator, and then enter 2.456 to get the answer 1.5672.

Method 2: Limit approximation method. For example, to calculate the arithmetic square root of 5 under the root sign, you can do this: the square of 2 is 4, the square of 3 is 9, and 5 is between 4 and 9, so the root sign 5 should be greater than 2 points. The square of 2.2 is 4.84, and the square of 2.3 is 5.29, so the root number five should be between 2.2 and 2.3. By analogy, how many decimal places you need can be calculated by yourself. Root number 5 = 2.23606