DLMF:4.28.E2 (Q1839): Difference between revisions

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Property / Symbols defined
 
Property / Symbols defined: hyperbolic cosine function / rank
 
Normal rank
Property / Symbols used
 
Property / Symbols used: base of natural logarithm / rank
 
Normal rank
Property / Symbols used: base of natural logarithm / qualifier
 
test:

e {\displaystyle{\displaystyle\mathrm{e}}}

\expe
Property / Symbols used: base of natural logarithm / qualifier
 
xml-id: C4.S2.E11.m2aadec
Property / Symbols used
 
Property / Symbols used: Q11217 / rank
 
Normal rank
Property / Symbols used: Q11217 / qualifier
 
test:

z 𝑧 {\displaystyle{\displaystyle z}}

z
Property / Symbols used: Q11217 / qualifier
 
xml-id: C4.S1.XMD8.m1adec

Latest revision as of 18:04, 1 January 2020

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DLMF:4.28.E2
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    Statements

    cosh z = e z + e - z 2 , 𝑧 superscript 𝑒 𝑧 superscript 𝑒 𝑧 2 {\displaystyle{\displaystyle\cosh z=\frac{e^{z}+e^{-z}}{2},}}
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    e {\displaystyle{\displaystyle\mathrm{e}}}
    C4.S2.E11.m2aadec
    0 references
    z 𝑧 {\displaystyle{\displaystyle z}}
    C4.S1.XMD8.m1adec
    0 references