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Any1 good at discrete maths?


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Guest arunhallan
Posted

Could someone solve these for me please?

1.

Solve the congruence:

72x = 2 mod 245

and

2.

COnsider the matrix:

A = (1 3)

(4 5)

Find the matrix M such that M(to the minus 1) AM is diagonal

Hence find a formula for A (to the n)

I have a whole paper i need the answer to in .pdf form if anyone would be willing to solve for me??

Thanks

Guest Palindrome
Posted

Isn't that extreme and bare-faced cheating?

Guest mcwarre
Posted
Isn't that extreme and bare-faced cheating?

Palindrome,

Hence his Avatar ;) :)

Guest arunhallan
Posted

no...

its off a past paper that im stuck on, im not at uni at the mo, so ive got no1 else 2 ask. every1 here seems quite educated so thought some1 might know.

Guest arunhallan
Posted

NB. my avatar has an arrow pointing downwards...

Guest arunhallan
Posted

o and ive done the rest of the paper, just need the right answers now!

Guest Paul [MVP]
Posted

arunhallan: not sure about your avatar dude...

P

Guest casper508
Posted

Lets start a homework section now shall we !! ;)

Cas

Posted

;). Discrete maths sucks - why on earth are you doing it if you're not in uni? Do some complex analysis instead - proper maths :)

I would help ordinarily, but I really want to get as far away from work as possible today - however, I will recommend www.sosmath.com to you :D

Oh, just as a hint if inverse of M = N then:

NAM * NAM = NAAM soo A to the n is gonna be M * (NAM)to the n * N

Guest arunhallan
Posted

What avatar?? ;)

I meant im not at uni as in im on easter break (so i cant ask my lecturers).

And im doing comp sci, discrete maths is just 1 of the options

Guest superkingdave
Posted

man complex analysis sucks

thats is the worst course i have ever taken. this year i have been doing theory of traffice flow and history of mathematics. nice

Posted

Man, I'm a first year too - now I feel really old :-/

heh dave, I know it sux, just been tellin mysef I really like it ;)

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