Advanced Math Archive: Questions from July 22, 2022
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Find and classify all the critical points of the following functions. (1) \[ \begin{array}{c} f(x, y)=(y-2) x^{2}-y^{2} \\ f(x, y)=7 x-8 y+2 x y-x^{2}+y^{3} \\ f(x, y)=\left(3 x+4 x^{3}\right)\left(y^1 answer -
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\( y^{\prime \prime}+2 y^{\prime}+y=\mathcal{U}(t-1)+\delta(t-2), \quad y(0)=0, \quad y^{\prime}(0)=-1 \)1 answer -
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