ALI.VKMKXT CHARTS IX J'ORKST MICXSUKAT lOX 



.SI 



COXSTAXT TKRMS, COEFFICIP:xTS, AND I;XPONICNTS 



The simplest method of handhng any constants which appear in a 

 formula is to group them so far as possible with one of the variables 

 and let them modify the graduations of the co^'responding axis. For 

 example, in such an equation as c = y2 .r^ -f- 3; + i, all three con- 

 stants — the term i. the coefficient 14, and the exponent 2 — can be 



-S 





31 



-3 



-2 



-I 



25 



-20 



JO 



.'O 



>x 



-JO 



-S 



■^ F 



Fig. 6. — Chan for equation z = J4 x- + y + i. 



.6 



grouped with .r by writing the equation z-={y2X~ -\- i) +3'- The 

 solution then involves an addition chart similar to that of figure i . with 

 tne exception that the .r axis is now graduated for values of (^.r- 

 -f- I ) . In figure 6, for example, which is designed to solve this equa- 

 tion, the graduations of CD and EF are identical with the same axes in 

 figure I. but that of AB is determined as follows : 



