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The FOIL method is a special case of a more general method for multiplying algebraic expressions using the distributive law. The word FOIL was originally intended solely as a mnemonic for high-school students learning algebra. The term appears in William Betz's 1929 text Algebra for Today, where he states: [2]
The foil is a light thrusting weapon with a maximum weight of 500 grams. The foil targets the torso, but not the arms or legs. The foil has a small circular hand guard that serves to protect the hand from direct stabs. As the hand is not a valid target in foil, this is primarily for safety.
The development of reel-less scoring apparatus in épée and foil has been much slower due to technical complications. The first international competitions to use the reel-less versions of these weapons were held in 2006. [13] In the case of foil and épée, hits are registered by depressing a small push-button on the end of the blade. In foil ...
A foil is one of the three weapons used in the sport of fencing. It is a flexible sword of total length 110 cm (43 in) or under, rectangular in cross section, weighing under 500 g (18 oz), with a blunt tip. [1] As with the épée, points are only scored by making contact with the tip. The foil is the most commonly used weapon in fencing. [2]
Aluminum foil is a household item that has about a million uses. We’ll highlight some amazing money-saving uses in this episode of The Saving's Experiment! Unexpected uses for aluminum foil
Use a glass pan when roasting veggies in the oven; use a stainless steel cookie sheet under baking potatoes as opposed to aluminum foil to catch the mess; and even try replacing foil with banana ...
Use aluminum foil My favorite kind of fix is one that only requires items I have in my house (and if it’s yours, too, here’s why you should put paper towels in the fridge and add these secret ...
Foil (architecture), decorative device derived from cusps of circles; Foil stamping, a printmaking technique; Foil (fencing), one of the three weapons used in modern fencing; Foil (fiction), a subsidiary character who emphasizes the traits of a main character Comedic or comic foil, the straight man in a comedy double act