10 EXPLANATION 01 CHARACTERS^ 



'S/^j or 'P, Signifies t.be cuh^ 



V ' °^ I "> Signifies any root. 



m 



j'' Signifies any j'cot cf any pGiver, 



Note. The number, or letter, belonging to the above sign^ 

 of powers and roots, is called the i^idcxy or exponent. 



A line, or vinculum, drawn over several numbers, sig- 

 nifies, that the numbers under it are to be considered 

 jo'irMy : thus, 20 — 7 + 811:5 j but without the vincu- 

 lum, 20 — y-f-Sizai. 



f\ hzz: a Y, h "^ the product of a and b. 



