Almost everyone wants to improve, to go to something more serious and complex.Everyone does it in their own way.Some are looking for a job that eventually occupy leading positions, while others yearn just to earn more money.Always it believed that the smarter a man is, the more he will achieve success.But there are those who improve their minds and hone the art of computing.Cubic root (of his calculation) - one of the common ways to "lead minds in order."
Since ancient times it was believed that the training of the mind - is the path to the attainment of wisdom.The ancient Greeks, who have achieved great heights in mathematics, said that "every man is born wise, but not everyone can find it within himself."It has recently become very popular to develop the ability to carry out complex and sometimes gromozdskie computing in mind.Cube root, to calculate which is not so easy, if a large enough number - one way.There are several common variants of how to extract the cube root of a number.Consider a couple.
method number 1
Sometimes you can find posters, which states that a person spends in the mind of the most complex calculations, including the calculation of the cube root.For a time, it was not clear how to do it, but algorithm for computing known, and everyone can show off their skills.
cube root extraction is carried out by "cutting off the number."First you need to remember one simple rule: the latest figures and the result is cubed, for some numbers, namely, 1, 4, 5, 6, and 9 are the same.Let's look at a specific example.Suppose we need to extract the cube root of the number 85 184. Consider the largest group in this number - a thousand, is 85. Which number in the cube give the closest value to the 85 but does not exceed it?This number 4. Now consider the remaining number 184. Note that it ends at 4. The only one-digit number that gives when raised to the third degree 4-ku at the end of a multi-valued number, this number 4. It turns out that the answer to the question is44. The number multiplies it by himself 2 times (44x44x44) and get 85184.
Method No. 2
cube root can be extracted with the help of the expansion of the Taylor series.However, this option is much more complicated than the previous one.We need a clear knowledge of the expansion formula, and all operations will need to calculate is not in the mind and on paper.Since the cube root - is the construction of the power of 1/3, then carry out calculations with the erection of 5. Expanding the number in a Taylor series, we get the answer to the miserable error.However, the calculations had to spend a lot.Therefore, this method is not the most convenient in terms of saving time.After all, if the number is very large, it will take a lot of effort to address
There is certainly another way, calculator.On scientific calculator has the ability to single click to extract the cube root of a number.As mentioned above, the method of extraction of the cube root of the number of lots.And all the time there are enthusiasts who are trying more and more options.Now, if you wish, you can find a table with the value of cube roots of numbers.You can make your own, just for fun, or to "warm up the brain" to make your table.Of course, this is not one day, but such a pastime can be turned into an interesting and rather rare hobby.After all the expense, no matter what - it's a very good exercise for the mind.The most important thing - it's not like what you think, and whether you do it at all.All people are unique, there are the only ones that produce in the mind of all the complicated calculation.Gift this they have from nature.Still others can develop these skills.Try, and you can be the next to come up with another way of how to calculate the cube root of a number.
