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junior college 1 | H2 Maths
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Candice
Candice

junior college 1 chevron_right H2 Maths chevron_right Singapore

Good evening! How do i solve this?

Date Posted: 3 years ago
Views: 557

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Boy Mow Chau
Boy Mow Chau's answer
316 answers (Tutor Details)
1st
for part(i), it is fairly easy to integrate and get answer in exact form.

if the question does not say “do not use GC” or “leave answer in exact form”, can also just use GC to calculate the integral.

for part(ii), it may be a bit tedious to integrate if use disc-washer method. for such case, can try using shell method.
Boy Mow Chau
Boy Mow Chau
3 years ago
having more time this morning, tried integrating the functions for part(ii), disc-washer method. found that the integration is actually still do-able, not so tedious.

final answer is same (81/2)pi [exact value].