MA100 Lecture Notes - Rational Function

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16 Oct 2011
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Exponents
Properties: a) a0= 1, a0
b) a-n= 1/an
c) aman=am+n
d) am/an= am/n
e) ( am)n= amn
f) (ab)m= ambm
g) (a/b)m= am/bm
h) (a+b)n an+bn
square roots: let a0
 the positive number that satisfies x2=a. -
Square-roots of negative numbers do not exist as real numbers therefore

Thus expressions under the root symbol must be 0

Example: 


X=2,8
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