S$25-09$: Problem $5$

$(1$ point$)$

Cooper $15\mathrm{.}0\mathrm{.}05$

If $f(x,y)=3x^{2}4y^2-2$ find

$($a$)f_x(1,2)=$

$($b$)f_y(1,2)=$

$($c$)f_x(0,0)=$

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