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File:AcoscmapT300.png
z_type cohc(z_type z) {return cosh(z)/z ;} z_type cohp(z_type z) {return (sinh(z)-cosh(z)/z)/z ;}

(3,517 × 3,492 (1.64 MB)) - 09:41, 21 June 2013
File:AcoscplotT.png
z_type cohc(z_type z) {return cosh(z)/z ;} z_type cohp(z_type z) {return (sinh(z)-cosh(z)/z)/z ;}

(1,267 × 1,267 (152 KB)) - 09:41, 21 June 2013
File:AcosqplotT100.png
z_type cohc(z_type z) {return cosh(z)/z ;} z_type cohp(z_type z) {return (sinh(z)-cosh(z)/z)/z ;}

(2,231 × 1,215 (152 KB)) - 09:41, 21 June 2013
File:CihplotT.png
Explicit plot $y=\mathrm{Cih}(x)=\cosh(x)/x$. y=cosh(x)/x;

(1,267 × 1,059 (87 KB)) - 09:41, 21 June 2013
File:CohcplotT.png
: $\displaystyle y=\mathrm{cohc}(x)= \frac{\cosh(x)}{x}= \frac{ \mathrm e^x + \mathrm e^{-x}}{2~ x}$

(1,258 × 1,258 (91 KB)) - 09:41, 21 June 2013
File:CoshcplotT.png
: $\displaystyle \mathrm{coshc}(z)=\frac{\cosh(z)}{z}$ where $\cosh$ is hyperbolic cosine, id est,

(465 × 851 (36 KB)) - 09:41, 21 June 2013

...{cosc}(z)=\frac{\cos(z)}{z} ~,$ $~ ~ \displaystyle \mathrm{cohc}(z)=\frac{\cosh(z)}{z} ~,$ DO(m,291){ x=.336+.01*m; y=cosh(x)/x;

(2,118 × 1,682 (216 KB)) - 09:41, 21 June 2013

File:SincplotT.png
// DO(m,291){ x=.336+.01*m; y=cosh(x)/x; if(m==0)M(x,y) else L(x,y) }

(3,350 × 1,001 (221 KB)) - 09:41, 21 June 2013
File:2014.12.26rubleDollar.png
\rm Bell & 291.207 / \cosh(0.715005 + 0.00630878 x)& 4.91540& 6.96990\\

(1,502 × 651 (246 KB)) - 08:26, 1 December 2018
File:2014rubleDollar3param.png
$f(x)=\mathrm{Bell}(x)=a/\cosh(b(x+c))$ F[x_] = 300 a /Cosh[.01 b (100 + c + x)];

(1,273 × 837 (294 KB)) - 08:26, 1 December 2018