Unformatted text preview: 5. Find a function f : R 2 → R such that f x (0 , 0) and f y (0 , 0) both exist but f is not continuous at (0 , 0). 6. Find the equation of the tangent plane to z = p x 2 + y 2 at the point (1 , 2 , √ 5). 7. Use the linear approximation to approximate ln ( 1 . 05 · (0 . 9) 2 ) ....
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 Spring '08
 WOLCZUK
 Math, Derivative, Continuous function, approximate ln, Justify your answer, zexy sin

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