square

[píng fāng]

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Mathematical concept

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zero Useful+1

zero

synonym Quadratic (Quadratic) generally refers to square (mathematical concept)

This entry is made by Compilation and application of scientific encyclopedia entries of "Science Popularization China" to examine.

Square, also called quadratic, is a power operation. For example, the square of a represents a × a, which is abbreviated as a ², or a × a (the first power of a multiplied by the first power of a equals the second power of a). For example, 4 × 4=16, 8 × 8=64, and the square symbol is 2.

Chinese name: square
Foreign name: square
Alias: Quadratic

Interpretation: index It's 2 Power
Recorded as: n²/n∧2
Pronunciation: píng fāng
Features: Non negative, a ² ≥ 0

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Pronunciation: p í ng f  ng, recorded as: ², e.g. x ². (Note: "^" can be substituted on the computer, for example, x ^ 2 means x ²)

Modern Chinese Dictionary interpretation:

① Index is 2 Power 。

② Refers to square meter 。

Square of side length (i.e. side length × side length)=area of square. Square is also called quadratic, square Inverse operation namely Square root , also called seeking square root , square root writing: ± √, e.g. ±

=± 1.7320......, while the square of exactly ± 1.7320...... Is 3. and

be called arithmetic square root , for example

=1.7320.......。

③ The square is equal to its own number only 0 and 1.

④ The square of a number is nonnegative. That is, a ² ≥ 0. Application: if a ²+b ²=0, then a=0 and b=0^[1]

Square number

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Square table within 100
multiplier	Square number	multiplier	Square number	multiplier	Square number	multiplier	Square number
one	one	twenty-six	six hundred and seventy-six	fifty-one	two thousand six hundred and one	seventy-six	five thousand seven hundred and seventy-six
two	four	twenty-seven	seven hundred and twenty-nine	fifty-two	two thousand seven hundred and four	seventy-seven	five thousand nine hundred and twenty-nine
three	nine	twenty-eight	seven hundred and eighty-four	fifty-three	two thousand eight hundred and nine	seventy-eight	six thousand and eighty-four
four	sixteen	twenty-nine	eight hundred and forty-one	fifty-four	two thousand nine hundred and sixteen	seventy-nine	six thousand two hundred and forty-one
five	twenty-five	thirty	nine hundred	fifty-five	three thousand and twenty-five	eighty	six thousand and four hundred
six	thirty-six	thirty-one	nine hundred and sixty-one	fifty-six	three thousand one hundred and thirty-six	eighty-one	six thousand five hundred and sixty-one
seven	forty-nine	thirty-two	one thousand and twenty-four	fifty-seven	three thousand two hundred and forty-nine	eighty-two	six thousand seven hundred and twenty-four
eight	sixty-four	thirty-three	one thousand and eighty-nine	fifty-eight	three thousand three hundred and sixty-four	eighty-three	six thousand eight hundred and eighty-nine
nine	eighty-one	thirty-four	one thousand one hundred and fifty-six	fifty-nine	three thousand four hundred and eighty-one	eighty-four	seven thousand and fifty-six
ten	one hundred	thirty-five	one thousand two hundred and twenty-five	sixty	three thousand and six hundred	eighty-five	seven thousand two hundred and twenty-five
eleven	one hundred and twenty-one	thirty-six	one thousand two hundred and ninety-six	sixty-one	three thousand seven hundred and twenty-one	eighty-six	seven thousand three hundred and ninety-six
twelve	one hundred and forty-four	thirty-seven	one thousand three hundred and sixty-nine	sixty-two	three thousand eight hundred and forty-four	eighty-seven	seven thousand five hundred and sixty-nine
thirteen	one hundred and sixty-nine	thirty-eight	one thousand four hundred and forty-four	sixty-three	three thousand nine hundred and sixty-nine	eighty-eight	seven thousand seven hundred and forty-four
fourteen	one hundred and ninety-six	thirty-nine	one thousand five hundred and twenty-one	sixty-four	four thousand and ninety-six	eighty-nine	seven thousand nine hundred and twenty-one
fifteen	two hundred and twenty-five	forty	one thousand and six hundred	sixty-five	four thousand two hundred and twenty-five	ninety	eight thousand and one hundred
sixteen	two hundred and fifty-six	forty-one	one thousand six hundred and eighty-one	sixty-six	four thousand three hundred and fifty-six	ninety-one	eight thousand two hundred and eighty-one
seventeen	two hundred and eighty-nine	forty-two	one thousand seven hundred and sixty-four	sixty-seven	four thousand four hundred and eighty-nine	ninety-two	eight thousand four hundred and sixty-four
eighteen	three hundred and twenty-four	forty-three	one thousand eight hundred and forty-nine	sixty-eight	four thousand six hundred and twenty-four	ninety-three	eight thousand six hundred and forty-nine
nineteen	three hundred and sixty-one	forty-four	one thousand nine hundred and thirty-six	sixty-nine	four thousand seven hundred and sixty-one	ninety-four	eight thousand eight hundred and thirty-six
twenty	four hundred	forty-five	two thousand and twenty-five	seventy	four thousand and nine hundred	ninety-five	nine thousand and twenty-five
twenty-one	four hundred and forty-one	forty-six	two thousand one hundred and sixteen	seventy-one	five thousand and forty-one	ninety-six	nine thousand two hundred and sixteen
twenty-two	four hundred and eighty-four	forty-seven	two thousand two hundred and nine	seventy-two	five thousand one hundred and eighty-four	ninety-seven	nine thousand four hundred and nine
twenty-three	five hundred and twenty-nine	forty-eight	two thousand three hundred and four	seventy-three	five thousand three hundred and twenty-nine	ninety-eight	nine thousand six hundred and four
twenty-four	five hundred and seventy-six	forty-nine	two thousand four hundred and one	seventy-four	five thousand four hundred and seventy-six	ninety-nine	nine thousand eight hundred and one
twenty-five	six hundred and twenty-five	fifty	two thousand and five hundred	seventy-five	five thousand six hundred and twenty-five	one hundred	ten thousand

classical Chinese

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Shicang black, many square 。 (Qing Dynasty, Yao Nai《 Climbing Mount Tai 》） ——Flat and square.

Square story

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It is said that there was a foreign minister in India who played chess with the king. When the king lost, he agreed to meet his request: put rice on the chessboard. One in the first grid, two in the second, then four, eight, 16... until 64. The king laughed and thought he was stupid, thinking he only needed a little rice.

According to the requirements of the minister, put 64 squares, meters

Grain. This number is 18446744073709551615, which is a twenty digit number. These rice can not meet the requirements of the minister, not to mention emptying the national treasury, but the rice of the whole India, or even the whole world!

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