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Magnitude - Vector
The magnitude, or length, of the vector v→ = (a1, a2, a3) is given by,
||v→|| = √(a12 + a22 + a23)
Example of Magnitude
Illustration: Determine or find out the magnitude of each of the following vectors.
(a) a→ = (3, -5, 10)
(b) u→= (1/5, - 2/5)
(c) W→ = (0,0)
(d) i→ = (1,0,0)
Solution
There is not very much to these other than plug into the formula.
(a) ||a→|| = √(9+25+100) = √134
(b) ||u→|| = √(1/5 + 4/5) = √1 = 1
(c) ||w→|| = √(0+0) = 0
(d) ||i→|| = √(1+0+0) = 1
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Chi Square Distribution Chi square was first utilized by Karl Pearson in 1900. It is denoted by the Greek letter χ 2 . This contains only one parameter, called the number of d
1 1 1 1 1 2 1 2 ? and 40/2=? 2/40=?
apllication in business and economics
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Minimum and Maximum Values : Several applications in this chapter will revolve around minimum & maximum values of a function. Whereas we can all visualize the minimum & maximum v
lnx(1+x)
Characteristics of Exponential Smoothing 1. More weight is described to the most recent data. 2. All past data are incorporated not like in moving averages. 3. Les
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