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What stands for iff in math?
If and only if (necessary and sufficient condition).
If y equals 2x plus 1 and x equals 4y-2 what is the value of xy?
We havey = 2x + 1 = 2(4y-2) + 1 = 8y - 3 iff 7y = 3 iff y = 3/7 iff x = 4y - 2 = 12/7 - 2 = -2/7(using "iff" for the double-arrow "is equivalent to" symbol which my PC won't copy).Thus xy = (-2/7)(3/7) = -6/7.
If the sum of 6 times Jack's age and 5 times Larry's age is 63 Jack is 1 year less than 3 times as old as Larry?
The question is "How old are Jack and Larry?" I assume. Let Jack's age be J years and Larry's age be L years. The first part of the question tells us that 6J + 5L = 63. The second part tells us that J = 3L - 1. Thus 6J + 5L = 63 iff 6(3L-1) + 5L = 63 iff 18L - 6 + 5L = 63 iff 23L = 69 iff L = 3 iff J = 3L - 1 = 3x3 - 1 = 8 (using "iff" for the "is equivalent to" symbol). So Jack is 8 years old and Larry is 3 years old.
The sum of a number and its square is 2?
One -- Well, since we are talking about a second-degree equation, we should at least check if there might be another root (it could be the same). The equation is: x + x^2 = 2 iff x^2 + x - 2 = 0 iff (x+1/2)^2 - 2 - 1/4 = 0 iff (x+1/2)^2 = (3/2)^2 iff x+1/2 = +- 3/2 iff x = -2 or x = 1 Hence, the other solution is -2. Note that -2 + (-2)^2 = -2 + 4 = 2 as required. -- The difference of a number's square and its double is -1? Answer: one (and only one). Check this.
Two lines lie in one plane if and only if the lines are parallel?
Two lines are coplanar iff they are parallel OR intersect.
What does IFF mean when used in a biconditional statement?
the statement IFF means "if and only if"
What is the difference between "if" and "iff" in formal logic?
if is an expression, while iff is a function often with multiple choices.
What has the author Roger Iff written?
Roger Iff has written: 'Besteuerung von Versicherungsleistungen und Bankprodukten' -- subject(s): Taxation, Law and legislation, Pensions
What is the syllables for bailiff?
There are 2 syllables. Bail-iff.
Can you be a binweevil mod and how?
No i dont think so only iff you contact binweevils and you would probebly have to be an adult and only iff youv'e never been kicked or banned!!
Is there really some people who are stranded on remote isles?
And how would we know iff they was stranded on remote isles, iff we knew about it, they would not be stranded because we would off rescued them.
How do you get barbiegirls v.i.p. codes?
well iff u dont have your mp3 packet any more u can serch online but iff u have it of a fashion pack there will be a code somewhere on that
What is an IFF beacon?
With most military aircraft moving as fast as they do there needs to be a system where you can tell who is on your side - friend - and who is on the other side - foe. An IFF beacon Identifies who is Friend or Foe.
What if a gril hits you hard?
what iff a gril hits you hard
Where do Loons spend the winter?
iff the coast of new england
What stands for iff in math?
If and only if (necessary and sufficient condition).
When is emergency mode automatically enabled on the f-15 iff system?
IFF is very secret device which plays very important role during air combat. It is enabled to get detonated automatically when it gets impact when crashed or under free fall of prescribed +G. This will destroy the entire device so as to maintain secrecy of technology behind it. The very purpose is to avoid its technical know how from enemy. (applicable to MIG)
