Question Completion Status: X QUESTION 4 20 points Save Answer Find the local maximum of f (x,y) = 4x2+y2-12x- 6y - 2xy+ 3 Find the critical point(s) and check the value of D = f f - f 2 at the critical point(s) For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). BIUS Paragraph Arial 10pt Ev E v Av LV ... E X2 X2 9 3 ABC V O 7 + X E P O WORDS POWERED BY TINY QUESTION 5 3 points Save Answer Find the antiderivative of f ( x ) = For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). BIUS Paragraph Arial 10pt Ev IEv A v & V Zx X 0 Q Q ... - + ABC v Priva Tern Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers Save and Submit ACCE