Q&A

Is the square root of 2 a repeating decimal?

Is the square root of 2 a repeating decimal?

In the case of the square root of 2 there is no repeating pattern. As you suggested, 2 is not the only integer whose square root exhibits this behavour. For any integer, if it is a perfect square, like 4, 9, or 64 then its square root is an integer.

What is the approximation of the square root of 2?

The square root of 2 is 1.414.

How many decimal places does the square root of 2 have?

ten decimal digits
Decimal notation For writing numbers, the decimal system uses ten decimal digits, a decimal mark, and, for negative numbers, a minus sign “−”. The decimal digits are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9; the decimal separator is the dot “.” in many countries (mostly English-speaking), and a comma “,” in other countries.

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Does the square root of 2 go on forever?

We were talking about how the square root of 2 is an irrational number, and that means you can’t write that value as the ratio of two integers. The decimal form of this value goes on forever, without repeating.

How many decimal places does 1.4 3 have?

(1.4)^3 will have three decimal places. It is equal to 2.744.

Is the square root of 1 a rational number?

Is Square Root of 1 Rational or Irrational? Since √1 = 1 which is rational numbers. Hence, the square root of 1 is rational.

What is the rough approximation to the square root of N?

Here’s the rough approximation that will get you to within a factor of 2 of your square root: Instead of starting with n as your approximation (newValue = n;), you would start off by calling this (newValue = RoughSqrt(n);). This will get you to your answer with way fewer iterations.

How do you find the square root of a given number?

Suppose you want to find the square root of and suppose your initial guess is : Let and Then gives a numerator and denominator the ratio of which converges to the square root of . This gives an approximation to the square root of as fast as the other methods but with no floating point arithmetic until the final division.

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How do I take the nth root of x^n?

If you want to take the Nth root instead, you just have to change the rough approximation to use 1/Nth the bits and change Newton’s method to use the derivative of x^N:

What method can be used to approximate the roots of an equation?

The number is the solution to the equation , so any method for numerically approximating the roots of an equation (such as the Newton method) will be able to approximate . Okay, I searched through the answers, but none seems to mention this one: long quadratic root calculation. From the name it is obvious that it resembles long division, like this: