-
Looking for HSC notes and resources? Check out our Notes & Resources page
proofs 4u (1 Viewer)
- Thread starter kractus
- Start date
Masaken
Clown™
- Joined
- May 8, 2021
- Messages
- 1,031
- Gender
- Female
- HSC
- 2023
someone posted this qn (18) a few days back i think:
boredofstudies.org
proofs make me want to jump off a cliff
Suppose that n =p^aq^b, where p and q are primes and p is not equal to q a) Use combinatorics (a counting argument) to explain why n has (a+1)(b + 1) factors. b) hence determine the number of factors of 80000.
boredofstudies.org
Would the following approach help with question 19?
If a - c is a divisor of ab + cd, there is an integer n such that)
(b-d))
n-(ad+bc))
ad + bc
n+(a-c)(d-b))
(n+d-b))
Therefore, a - c is a divisor of ad + bc.
If a - c is a divisor of ab + cd, there is an integer n such that
ad + bc
Therefore, a - c is a divisor of ad + bc.