دالة أسية

Also known as exponential, exponential function of base a, exponential map

صنف من الدوال الرياضية

Key facts

General definition: exp ⁡ z = e z {\displaystyle \exp z=e^{z}}
Domain: C {\displaystyle \mathbb {C} }
Image: { ( 0 , ∞ ) for z ∈ R C ∖ { 0 } for z ∈ C {\displaystyle {\begin{cases}(0,\infty )&{\text{for }}z\in \mathbb {R} \\\mathbb {C} \setminus \{0\}&{\text{for }}z\in \mathbb {C} \end{cases}}}
Value at 1: e
Fixed point: − W n (−1) for n ∈ Z {\displaystyle n\in \mathbb {Z} }
Reciprocal: exp ⁡ ( − z ) {\displaystyle \exp(-z)}
Inverse: Natural logarithm , Complex logarithm
Derivative: d d z exp ⁡ z = exp ⁡ z {\displaystyle {\frac {\mathrm {d} }{\mathrm {d} \!\,z}}\exp z=\exp z}
Antiderivative: ∫ exp ⁡ z d z = exp ⁡ z + C {\displaystyle \int \exp z\,dz=\exp z+C}
Taylor series: exp ⁡ z = ∑ n = 0 ∞ z n n ! {\displaystyle \exp z=\sum _{n=0}^{\infty }{\frac {z^{n}}{n!}}}

via Wikipedia infobox

Wikidata facts

Subclass of: entire function
Has part: exponentiation
Image: Exponentials.svg
Said to be same as: antilogarithm

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opposite of: logarithm
different from: exponential equation
Commons category: Exponential functions
uses: exponentiation
on focus list of Wikimedia project: Wikipedia:Vital articles/Level/4
maintained by WikiProject: WikiProject Mathematics

Sources (4)

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Article · العربية

الدالة الأسية (بالإنجليزية: Exponential Function)‏ هي كل دالة تُكتب على الشكل حيث و عدد حقيقي موجب لا يساوي 1، إذا كان فإن الدالة تكون تناقصية وتسمى دالة تضاؤل أسي، أما إذا كان فإن الدالة تكون تزايدية وتسمى دالة نمو أسي.

Abstract from DBpedia / Wikipedia · CC BY-SA