test (1 Viewer)

[Qualona]

hi. ive got a test on friday on geometrical applictions of calculus and integration. does anyone have some practise questions i could do, hsc level.

 

[jemsta]

look for some in the past hsc papers

 

[williamc]

I did a 2 unit test today on those topics hoping for 80%.
Screwed up a maximum area problem damn, they gave us the hardest one i have ever seen.!

 

[williamc]

what did it say??

Somethign about a cylindral can and the volume was 14(pie)cm^3. And we have to find the raduis of the base and the height of the cylinder for the total surface area to be a minimum. (there goes 5 marks out of 45 lol..)

 

[imprsiv]

Somethign about a cylindral can and the volume was 14(pie)cm^3. And we have to find the raduis of the base and the height of the cylinder for the total surface area to be a minimum. (there goes 5 marks out of 45 lol..)

answer is ur anus. nah i got that question in my 1st topic test i found the radius but forgot 2 sub bak to find the height. lol its not that hard william

(pie)r^2h = 14

h = 14
(pie)r^2

sub into surface area . 2(pie)r^2 + 2(pie)r 14 (i think it is)
(pie)r^2

then solve algebraically n differiente n boom ur done