Traditional Culture Encyclopedia - Photography and portraiture - What is the positive infinity of e?
What is the positive infinity of e?
Find the x power of e, and when x is greater than 1, the derivative is greater than 1.
Therefore, when x tends to infinity, the derivative must be greater than the derivative of X= 1 and squeezed by more than 1. Because the derivative is greater than zero, it monotonically increases from 1 to positive infinity, so it is infinite.
Infinite symbol:
The symbol of infinity is that its Unicode is u+221e "∞" infinity, which is expressed as \ infinity in LaTeX.
1655 john wallis first used infinite symbols. After they are used, they are also used in fields other than mathematics, such as modern mysticism and semiotics.
Geometry and topology:
Principal term: the dimension of vector space.
Infinite dimensional space is often used in geometry and topology, especially classification space, that is, Eilenberg? Common examples of MacLane space are infinite dimensional complex projective space K(Z, 2) and infinite dimensional real projective space K(Z/2Z, 1).
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