DLMF:4.35.E40 (Q1914)

From DRMF
Revision as of 19:13, 1 January 2020 by Admin (talk | contribs) (‎Changed an Item: Add constraint)
Jump to navigation Jump to search
No description defined
Language Label Description Also known as
English
DLMF:4.35.E40
No description defined

    Statements

    Defining formula
    | tanh ⁡ z | = ( cosh ⁡ ( 2 ⁢ x ) - cos ⁡ ( 2 ⁢ y ) cosh ⁡ ( 2 ⁢ x ) + cos ⁡ ( 2 ⁢ y ) ) 1 / 2 . 𝑧 superscript 2 𝑥 2 𝑦 2 𝑥 2 𝑦 1 2 {\displaystyle{\displaystyle|\tanh z|=\left(\frac{\cosh\left(2x\right)-\cos% \left(2y\right)}{\cosh\left(2x\right)+\cos\left(2y\right)}\right)^{1/2}.}}
    0 references
    DLMF id
    DLMF:4.35.E40
    0 references
    Symbols used
    cosine function
    Defining formula
    cos ⁡ z 𝑧 {\displaystyle{\displaystyle\cos\NVar{z}}}
    xml-id
    C4.S14.E2.m2afdec
    0 references
    hyperbolic cosine function
    Defining formula
    cosh ⁡ z 𝑧 {\displaystyle{\displaystyle\cosh\NVar{z}}}
    xml-id
    C4.S28.E2.m2aacdec
    0 references
     
        Retrieved from "https://drmf-beta.wmflabs.org/index.php?title=Item:Q1914&oldid=28035"