Prove or Disprove: for All Real Numbers $\mathcal { X }$

question 29

Short Answer

Prove or disprove: For all real numbers $\mathcal { X }$ and $y , \lfloor xy \rfloor = \lfloor x \rfloor . \lfloor y \rfloor$

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Definitions:

September

The ninth month of the Julian and Gregorian calendars, known for marking the transition from summer to autumn in the Northern Hemisphere.

Materials Quantity Variance

The difference between the actual quantity of materials used in production and the standard quantity expected to be used, multiplied by the standard cost per unit of material.

Labor Efficiency Variance

The difference between the actual hours worked and the standard hours expected, multiplied by the standard labor rate.

June

The sixth month of the year in the Gregorian calendar.