An XY recorder in which a recording paper is moved on a platen along the X axis in accordance with one variable and a stylus is moved along the Y axis in accordance with another variable, employs a controller to control the paper movement in several different modes. In a paper draw out mode, the paper is drawn out from a paper-feed roll pinched on the platen between pinch rollers and drive rollers, and during a time interval when the paper-feed roll exerts a backward tension to the paper, the paper is intermittently allowed to slip on the platen by disengaging the pinch rollers from the drive rollers. The tension to the paper backward from the paper-feed roll automatically aligns the paper.
xy - 4
0.5*xy
xy - xy = 0
xy + xy = 2xy
That is the same as log xy.
XY
It is an expression in the form of: xy+7
My suggestion is that you learn how to write a complete sentence that makes sense.
The answer depends on whether xy are commutative numbers or operators in a permutation group.
The GCF is xy
My suggestion is that you learn how to write a complete sentence that makes sense.
Assuming that x and y are two variables, such as they might be in Algebra, and that the expression "xy" is meant to be the multiplication of x times y, you would write it as x * y This expression could be used with a third variable in an assignment statement, or as a condition in an if statement where it can be compared to another variable or a constant.