In general, the discriminant is an algebraic expression that gives. information about the roots of a polynomial. In the case of a quadratic equation the discriminant is the part of. the quadratic equation that is under the radical sign.
How to Select Dampers and Louvers. Dampers and louvers are used to control the flow of air in a process system or enclosed area. Dampers are usually motorized or manually-adjustable for flow control. Louvers are often fixed for a constant flow rate.
A serger is the perfect companion machine for the developing sewist, and a must for creating professional-looking garments. The Magnolia 7034D gives you a wide range of serging features in a compact machine. With easy dial adjustments and 1,300 stitches per minute, youâll get your projects done quickly and easily.