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/ ____\
____ ____ |x*\/ 10 |
/ \/ 10 *\/ pi *C|--------|
| | ____ |
| / 2\ \ \/ pi /
| cos\5*x / dx = C + -------------------------
| 10
/
$$-{{\sqrt{\pi}\,\left(\left(\sqrt{2}\,\sqrt{5}\,i-\sqrt{2}\,\sqrt{5}
\right)\,\mathrm{erf}\left({{\left(\sqrt{2}\,\sqrt{5}\,i+\sqrt{2}\,
\sqrt{5}\right)\,x}\over{2}}\right)+\left(\sqrt{2}\,\sqrt{5}\,i+
\sqrt{2}\,\sqrt{5}\right)\,\mathrm{erf}\left({{\left(\sqrt{2}\,
\sqrt{5}\,i-\sqrt{2}\,\sqrt{5}\right)\,x}\over{2}}\right)+\left(-
\sqrt{2}\,\sqrt{5}\,i-\sqrt{2}\,\sqrt{5}\right)\,\mathrm{erf}\left(
\sqrt{5}\,\sqrt{-i}\,x\right)+\left(\sqrt{2}\,\sqrt{5}\,i-\sqrt{2}\,
\sqrt{5}\right)\,\mathrm{erf}\left(\left(-1\right)^{{{1}\over{4}}}\,
\sqrt{5}\,x\right)\right)}\over{80}}$$
/ ____\
____ ____ |\/ 10 |
\/ 10 *\/ pi *C|------|*Gamma(1/4)
| ____|
\\/ pi /
----------------------------------
40*Gamma(5/4)
$$-{{\sqrt{\pi}\,\left(\left(\sqrt{2}\,\sqrt{5}\,i-\sqrt{2}\,\sqrt{5}
\right)\,\mathrm{erf}\left({{\sqrt{2}\,\sqrt{5}\,i+\sqrt{2}\,\sqrt{5
}}\over{2}}\right)+\left(\sqrt{2}\,\sqrt{5}\,i+\sqrt{2}\,\sqrt{5}
\right)\,\mathrm{erf}\left({{\sqrt{2}\,\sqrt{5}\,i-\sqrt{2}\,\sqrt{5
}}\over{2}}\right)+\left(-\sqrt{2}\,\sqrt{5}\,i-\sqrt{2}\,\sqrt{5}
\right)\,\mathrm{erf}\left(\sqrt{5}\,\sqrt{-i}\right)+\left(\sqrt{2}
\,\sqrt{5}\,i-\sqrt{2}\,\sqrt{5}\right)\,\mathrm{erf}\left(\left(-1
\right)^{{{1}\over{4}}}\,\sqrt{5}\right)\right)}\over{80}}$$
=
/ ____\
____ ____ |\/ 10 |
\/ 10 *\/ pi *C|------|*Gamma(1/4)
| ____|
\\/ pi /
----------------------------------
40*Gamma(5/4)
$$\frac{\sqrt{10} \sqrt{\pi} C\left(\frac{\sqrt{10}}{\sqrt{\pi}}\right) \Gamma\left(\frac{1}{4}\right)}{40 \Gamma\left(\frac{5}{4}\right)}$$