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Hyperbolic Cosine Integral Chi(x)

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Calculates the hyperbolic cosine integral Chi(x).
\(Chi(x)={\large\int_{\small 0}^{\small x}\frac{\cosh(t)-1}{t}}dt+\ln(x)+\gamma\)
x 
\(\normalsize Hyperbolic\ sine\ integral\ Shi(x)\\ \ and\ hyperbolic\ cosine\ integral\ Chi(x)\\ (1)\ Shi(x)={\large\int_{\small 0}^{\small x}\frac{\sinh(t)}{t}}dt\\ (2)\ Chi(x)={\large\int_{\small 0}^{\small x}\frac{\cosh(t)-1}{t}}dt+\ln(x)+\gamma\\\)

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