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Mathematics 15 Online
OpenStudy (anonymous):

integral hyperbolic function

OpenStudy (anonymous):

\[\int\limits \frac{ 1 }{ sinhx*coshx }dx\]

OpenStudy (michele_laino):

hint: we can rewrite your function as below: \[\Large \frac{1}{{\sinh x\cosh x}} = \frac{{\cosh x}}{{\sinh x{{\left( {\cosh x} \right)}^2}}} = \frac{1}{{\tanh x}}\frac{1}{{{{\left( {\cosh x} \right)}^2}}}\]

OpenStudy (michele_laino):

furthermore, we have: \[\Large d\left( {\tanh x} \right) = \frac{{dx}}{{{{\left( {\cosh x} \right)}^2}}}\]

OpenStudy (anonymous):

ok would there be a way to do it just as simply without tanh?

OpenStudy (michele_laino):

you can try using the standard definitions of sinhx and coshx, namely: \[\Large \sinh x = \frac{{{e^x} - {e^{ - x}}}}{2},\quad \cosh x = \frac{{{e^x} + {e^{ - x}}}}{2}\]

OpenStudy (anonymous):

alright thank you

OpenStudy (michele_laino):

thank you!

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