I need to define some function like f(x,y) = x * sin(y)/y if y != 0, x otherwise, such that f can be differentiated. Is there a way to do so? Thanks!
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I need to define some function like f(x,y) = x * sin(y)/y if y != 0, x otherwise, such that f can be differentiated. Is there a way to do so? Thanks!
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