physics 8.0 4/14/03 6:27 PM Page 1
SCALARS AND VECTORS
OPERATIONS ON VECTORS
1. Scalar multiplication : To multiply a vector by a scalar c (a real number), stretch its length by a factor of c. The vect
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N UMBER S YSTEMS
T he n atural numbers are t he n umbers we c ount with:
1, 2. 3, 4, 5, 6, , 27, 28, . .
T he whole numbers are the numbers we c ount with and zero: 0, 1, 2, 3, 4, 5, 6, . T he integers are the numbers we count with, their negatives. a nd
Astronomy 4.x.1 3/21/03 10:49 AM Page 1
Wave description: The periodic oscillation of electric and magnetic fields in space. Characterized by the following: 1. Frequency of the oscillation, , measured in cycles per second (hertz).
CALCULUS REFERENCE 3/18/03 10:49 AM Page 1
DERIVATIVES AND DIFFERENTIATION
Definition: f (x) = lim
f (x + h ) f (x ) h h 0
f (x) dx = F (x) + C if F (x) = f (x) .