MAT_1143-mar_2

MAT_1143-mar_2 - March 1 2010 Click to edit Master subtitle...

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Click to edit Master subtitle style March 1, 2010 Sections 4.2-4.3

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Exam 2 Exam 2 will be Friday, March 11 It will cover 3.1-3.3, 4.1-4.3 and 4.5
Exponents We looked at problems like 108 to express LARGE NUMBERS We looked at problems like 10-9 to express SMALL NUMBERS We can use exponents with other bases.

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In general an = a*a*a*…*a (a times itself n times) when n is a POSITIVE INTEGER a is called the base n is called the exponent So, exponents give us a short-hand notation for repeated multiplication of the base Actually multiplication is just a short-hand notation for repeated addition 4*3 = 3+3+3+3 (4 times) OR 4+4+4 (3 times) Unlike multiplication, we HAVE to keep the base and exponent straight.
Properties of Exponents 34*35=(3*3*3*3)*(3*3*3*3*3) So how many factors of 3 do we have? A: 9 B: 20 C: -1 D: 3 We ADD the exponents in this case to get the product m n m n a a a + =

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Properties of Exponents 35 / 34 =(3*3*3*3*3)/(3*3*3*3)
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This document was uploaded on 05/10/2011.

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MAT_1143-mar_2 - March 1 2010 Click to edit Master subtitle...

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