What is the differential of surface area, dS , in space If f and its first partial derivatives are continuous on the closed region R in the xy plane, then the differential of the surface area given by z f ( x , y ) over R is which of the following dS fy ( x , y ) 2 dy dS 1 fx ( x , y ) 2 fy ( x , y ) 2 dA dS fx ( x , y ) 2 fy ( x , y ) 2 dA dS 1 fy ( x , y ) 2 dy dS f ( x ) 2 dx dS 1 f ( x ) 2 dx

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What is the differential of surface area, dS , in space  If f and its first partial derivatives are continuous on the closed region R in the xy   plane, then the differential of the surface area given by z   f ( x , y ) over R is which of the following  dS     fy ( x , y )   2 dy dS   1     fx ( x , y )   2     fy ( x , y )   2 dA dS     fx ( x , y )   2     fy ( x , y )   2 dA dS   1     fy ( x , y )   2 dy dS     f ( x )   2 dx dS   1     f ( x )   2 dx

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What is the differential of surface area, dS , in space? If f and its first partial derivatives are continuous on the closed region R

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