itsnyiasmith3023 itsnyiasmith3023 29-03-2024 Mathematics contestada Find the limit, or show that the limit does not exist. a) lim((x,y)→(0,0))(x⁴-y⁴)/(x²+y²) b) lim((x,y)→(0,0))(2x²-y²)/(x²+2y²)