Unformatted text preview: at x = 1? (b) Use the tangent line approximation at x = 1 to f ( x ) = √ x to ﬁnd √ 1 . 1. 3. Some element has a half life of 20 years, how long does it take until 1% of the element left? 4. Page 50, # (3.2.31) 5. Solve for x: a) 5 x = 3 · 9 x . b) ln x 2 = ln x . 6. For f ( x ) = x + x 2 , what’s the average rate of change of the function from 1 to 1 + h ? What’s the instantaneous rate of change at x = 1? 7. Page 145, # (8.12.6) 8. Page 150, # (8.13.16), (8.13.20)...
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 Fall '07
 RickRugangYe
 Derivative, Monotonic function, Convex function

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