3ry Find the following partial derivatives of f(x,y) =7yey. f-(T, y) = | 21e3xy² %3D fy(x, y) = 21rye3æy + 7e3xy fez (T, y) = 63e³yy} fy(x, y) = 7(9e3y"yx² + 6e3y#x} fay (x, y) = 21(3yæe3ry+ 2ye3yx fyr (T, y) = 9e3Yya² + 24ye3™y

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