ii-A] 



WAVE ANALYSIS. 



343 



Arrange these in the scheme, as shown ; then compile the table, after 

 multiplying by the sine of the angle indicated: thus, a 1 = a 1 sin3o. 



FIG. 3. Wave with even and odd harmonics and a constant term ; 12 

 ordinates used. 



Ordinates : 



Diff.: 



Sum: 



SCHEME (12 ordinates). 



y u yo y fl 



Sum : a^ a 2 a z Sum : l> 9 b^ b^ b^ Diff. : a " b" Sum : C Q c l 

 Diff.: a I a^ Diff: ^ ' &{ b} 



TABLE (12 ordinates). 



Check: A 1 A 3 



