# 10 definitions by adam smith

Top Definition
The study of choice in the face of scarcity.
Ignorant people who post idiotic definitions have scarce resources.
by April 25, 2005

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When yay just wont cut it
.....finding 50p in a public toilet
by March 09, 2005

### The Urban Dictionary Mug

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One of the most special personality and caring...

wanna know more get in touch!!!
"Soumit is heading towards the stage!!"
by April 23, 2005

### The Urban Dictionary Mug

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A mathematical rule useful for finding the derivative or instantaneous rate of change of a function that involves the form y = x^n. If n = 0, then the rate of change is zero, since any number x raised to the zero power is 1. To find the derivative when n is some other number other than 0, simply pull down the exponent n, multiply the entire function by n, then subtract 1 from the exponent after you pull n down and multiply. Basically:
1) y = x^n
2) y' = nx^n-1 (y' means take the derivative of the function with respect to x, so use the simple power rule!)

Piece of cake! One of the most helpful rules in calculus, because if you didn't have the simple power rule, then you would have to use the general form for a derivative, which takes alot longer than the method above.
Try these out! Just take the derivative as described above!

y = 3x^(-2)
y'= -6/(x^3)

y = 12x^0
y'= 0

y = 3x^(1/2)
y'= (3/2)x^(-1/2) or 3/2 times 1/squareroot of x
by April 20, 2005

### The Urban Dictionary Mug

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Made up to describe randomly changing shape. It means to change randomly after a random amount of time.
edds radom shape changy thing it just never stops
by February 26, 2005

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1. this person does not get as much as he gives. this person finds true love with someone who does not feel the same way. at times these individuals can be very aggitating and annoying. They live in great fear of losing there self respect. there looks can be decieving. they are extremely stubborn and self absorbed...
2. this nicest person in the whole entire world. she is always there for u wen u need her, and she is just soooo sweet. im lucky to have got to have known her
3. one of the cutest girl in this world.very shy and swaeet and is liked by all.unfortunately she doesnt like me so my life is ruined.
lol one of da most funnniest things about her is, u shudntttt fite with her. she gets violent lolll and to make fingz worse wen she wants to hit u back she'l grab ur most delicate areassss lol hint hint.
by April 27, 2005

### The Urban Dictionary Mug

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To smoke many cigarettes in one sitting. See also liggun
I might sit here and just bun lig all day.
by July 22, 2003

### The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.