lim (x,y) approaches (0,0) of sin(x^2+y^2)/(x^2+y^2)

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lim (x,y) approaches (0,0) of sin(x^2+y^2)/(x^2+y^2)
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You don't need "polar substitution" you just need to set x^2+y^2 to some variable. That's just confusing

youtubepooppismo