Question

The total resistance R produced by three conductors with resistances R1, R2, R3 connected in a...

The total resistance R produced by three conductors with resistances R1, R2, R3 connected in a parallel electrical circuit is given by the formula


1/R = 1/R1 + 1/ R2 + 1/R3     

.Find (PARTIAL DERIVATIVE)


dr/dr1 (partial derivation)

.

Find an equation of the tangent plane to the given surface at the specified point.

z = ex^2 - y^2 (3,-3,1)

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