The Ab Swing is an exercise product that resembles a chair. The user sits in the chair and places their feet in special foot holders, then raises and lowers their legs. This works the abdominal (stomach) muscles.
Cross product tests for parallelism and Dot product tests for perpendicularity. Cross and Dot products are used in applications involving angles between vectors. For example given two vectors A and B; The parallel product is AxB= |AB|sin(AB). If AXB=|AB|sin(AB)=0 then Angle (AB) is an even multiple of 90 degrees. This is considered a parallel condition. Cross product tests for parallelism. The perpendicular product is A.B= -|AB|cos(AB) If A.B = -|AB|cos(AB) = 0 then Angle (AB) is an odd multiple of 90 degrees. This is considered a perpendicular condition. Dot product tests for perpendicular.
You can find ab machines much under $1000.00 it just depends on what kind of product you want. At montrealimport.com you can find an ab rocket for $49.99. Websites like bizrate have numerous ab machines for $100 and up
This equation represents an elementary example of a synthesis type reaction. The formula for this reaction is A + B = AB, where A & B are reactants and AB is the product.
AB pos or AB neg
AB
For two vectors A and B, the scalar product is A.B= -ABcos(AB), the minus sign indicates the vectors are in the same direction when angle (AB)=0; the vector product is ABsin(AB). Vectors have the rule: i^2= j^2=k^2 = ijk= -1.
Negative times negative equals positve, so -a*-b=ab (positive ab)
It is 1/(ab).
For a compound AB it is the result of the product [A].[B] in solution.
In math and algebra, a product is the result of multiplication. The product of a x b is ab.
2(ab)
Reciprocals. Example (a/b)(b/a)=(ab/ab)=1