Find the integral \(\int sin\frac{5}{2}x dx\)

\[\frac{5}{2}\cos {\frac{5}{2}}x+c\] \[\frac{2}{5}\cos {\frac{5}{2}}x+c\] \[\frac{5}{2}\sin {\frac{5}{2}}x+c\] \[\frac{-5}{2}\cos {\frac{5}{2}}x+c\]

\[\frac{-5}{2}\cos {\frac{5}{2}}x+c\]

\(\int sin ax dx\) = \(\frac{- cos ax}{a} + c\)