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Unformatted text preview: t = 0 and g ( t ) = f x ( x + t x,y + y ) x. (b) Show that we can write f ( x,y + y ) f ( x,y ) = f y ( x,y + 2 ) y where  2   y  . 7. (a) Use Proposition 3.3.7 to prove Equation ( 3.11 ). (b) Use Defnition 3.3.3 to prove Equation ( 3.11 ) directly. 8. Show that iF f ( x,y ) and g ( x,y ) are both dierentiable realvalued Functions oF two variables, then so is their product h ( x,y ) = f ( x,y ) g ( x,y ) and the Following Leibniz Formula holds: h = f g + g f....
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This note was uploaded on 10/20/2011 for the course MAC 2311 taught by Professor All during the Fall '08 term at University of Florida.
 Fall '08
 ALL
 Calculus

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