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Unformatted text preview: h ◦ f ◦ g )( x ) 5. For the following statements, tell me whether they are true or false. (a) If the functions f ( x ) and g ( x ) are deﬁned for all real numbers. Then ( f ◦ g )( x ) is also deﬁned for all real numbers. (Is this true if the domains were the negative instead of all real numbers?) (b) A function is onetoone provided that f ( x 1 ) 6 = f ( x 2 ), whenever x 1 6 = x 2 . (c) Let f ( x ) = b x c . Then 879.5 is in the range of f . (d) Let f ( x ) = x2  + 3. Then f ( x ) > 0 for all x. 6. “Understand” the following homework problems 2 : • 2.2: 38 • 2.3: 7 1 Remember to include intercepts, vertices,etc. .. 2 You should “understand” all of your homework not just these 2...
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 Spring '07
 Monarres
 Math, Calculus, PreCalculus, Set Theory, Real Numbers, Inverse function

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