D I T 



S<m. z d x cos. z. 



Cos. z dz sin. z. 



Sin. tnz m d z cos. m K, 



Cos. war.. mdzsin. mx 



Ver. sin. .r rfarsin. e. 



dz 



dz 



sin. 2 z 



dzsin.z 



?c. z = azta.n. z X sec. z. 



cos. 2 z 



Cosec. z ., 



sin.* z ' 

 (Sin.) z m (sin.) zdzcos. z. 



2d. differential .r* (dx constant) ...... 2 <7.r 8 . 



?d. diff. JT* (rfjp variable) ......... 2 do* + 2 .rrfs ^. 



2d. diif. yi=. < 2ax x* (dx constant) y d* y -f d y* =. 



2d diff. 2 jrv + ay &a,- *. ..... dxdy +xd*y + 



TABLE II. 



Of Integrate t containing afeio of the mos* usual forms that occur in the 

 practical solution of Problems. 



DIFFERENTIAL. 



dx 



