Question: Let u: R2 - R , ( x,y ) + u(x,y) be two tims differentiable and continous . Let: P: Jo, 0 [ * [0,

Let u: R2 - R , ( x,y ) + u(x,y) be two tims differentiable and continous . Let: P: Jo, 0 [ * [0, 2TT [ -7 1R2 Pcrib ) = ( rcosy, + sing ) and let : = Mop Show that the equation: ( Au ) ( P (rise) ) = 2 u (riv ) + 4 ( T,4 ) + 1 (54 ) ace? 212 holds true on the set Jo , [ x Join[ ( hint: Calculate ou au ac using the 24 chain rule

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