Maths EXT 1 Help (1 Viewer)

mmmmmmmmaaaaaaa

God Did
Joined
Jun 11, 2021
Messages
1,525
Location
We The Best
Gender
Male
HSC
2022
for 4. multiply our y and dx to the other sides. From there integrate and you should be able to get your answer ... it should come out to something like the equation of a circle (or something similar)
 

5uckerberg

Well-Known Member
Joined
Oct 15, 2021
Messages
562
Gender
Male
HSC
2018
For Q5 envision that you are working to find the volume of a cone and that the axis you are rotating around is the height multiplied by the pronumeral squared which serves as the radius multiplied by pi.
 

mmmmmmmmaaaaaaa

God Did
Joined
Jun 11, 2021
Messages
1,525
Location
We The Best
Gender
Male
HSC
2022
for 5. take out 4 as a factor ... leaving with 2 x sqrt(4-x^2) ... then you're left with something like 2 int of sqrt(2^2-x^2) ... from that, you can use the standard volume of a circle = 4/3 x pi x r^3 where r =2.

That should give you your answer
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top