B bos1234 Member Joined Oct 9, 2006 Messages 491 Gender Male HSC 2007 Nov 30, 2006 #1 how do u know when to put absolute value on qn? is it when u get a negavitve valus for area always?
twilight1412 Member Joined Mar 20, 2006 Messages 197 Location St Marys Gender Male HSC 2007 Nov 30, 2006 #2 intergration gives you the area between the curve and the axis and you obtain an negative answer whenever the area is on the negative side of the axis you use abosulte value when they ask you for an area not then value because you cannot have a negative area ><
intergration gives you the area between the curve and the axis and you obtain an negative answer whenever the area is on the negative side of the axis you use abosulte value when they ask you for an area not then value because you cannot have a negative area ><
P pLuvia Guest Nov 30, 2006 #3 Draw a quick sketch of the curve, finding the x intercepts and the region where it is below the x axis. Then split the integration between those limits and the answer should be negative hence absolute value it to obtain a positive answer
Draw a quick sketch of the curve, finding the x intercepts and the region where it is below the x axis. Then split the integration between those limits and the answer should be negative hence absolute value it to obtain a positive answer
F Forbidden. Banned Joined Feb 28, 2006 Messages 4,436 Location Deep trenches of burning HELL Gender Male HSC 2007 Nov 30, 2006 #4 Already up to integration ? And we are still on Geometrical Applications of Diffrentiation ...