calculus questions 1 partial differentiation the rst six questions are from last year s sheet 7 and are included here for revision the other questions are new 1 find all ...
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...Calculus questions partial differentiation the rst six are from last year s sheet and included here for revision other new find all second dervatives of a x y b sin xy if f with cost sint nd df d by using dierentiation dt dy where dx xcosx cos stationary points i e fx fy ex their natures they maxima minima or saddle function identify type show that has at three this lectures how would you solve question were told had to maximise constraint solutions fxx fxy fyx fyy xycos xcos ycos xysin xx xsin yx yy xydx xydy costsint sintcost dxdy xydxdy r costsin t tsint result c then note it is often better leave both in your answers xsinx ydy ysin minimum point...