MAT exam

[odd mica]

You don't know the first one?

[tropic panther]

None

[odd mica]

I remember helping you before

[tropic panther]

I don't

[odd mica]

Been helping you for more than one year

[tropic panther]

Well I rarely enter this server

Can you help

[odd mica]

Yes I can

[tropic panther]

Ok let's do this

[odd mica]

I'd like to know what you've done already

[tropic panther]

I did 3

Sorry I mean I did 4

Number 4

[odd mica]

how much in 1

for 1 just multiply a to all terms first then multiply b to all terms then do subtraction

[tropic panther]

Oh that's ez

a^(n+1)-b^(n+1)

[odd mica]

yes

[tropic panther]

In the second one

I cant really see anything

Else

[odd mica]

what else do you want to see

[radiant widget]

fäf

[odd mica]

so tell me

[tropic panther]

Uhh

I dunno

[odd mica]

can you factor prime number

[tropic panther]

Nope

Oh

So its only 1

[odd mica]

nah tell me the answer and ttell me why it's only 3

[tropic panther]

I dunno why it's only 3

[odd mica]

Do something with n^2-1

something

[tropic panther]

(n-1)(n+1)

[odd mica]

so if i say n-1=1 what do we get?

[tropic panther]

n=2

But why we say n-1=1

Why it equal one

[odd mica]

beacuse if one of the factor is 1 then the other factor is indendent and hence that number will be prime

like 5*1 = 5 which is prime

the 1 doesn't make it composite

so if one of the n+1 or n-1 is 1 then the other number being prime will give us product as prime

[radiant widget]

fäf

fäf

[odd mica]

because you get 2* 4, 3* 5, 4*6,... which are not prime

[tropic panther]

Ok

[odd mica]

Do you get it?

[tropic panther]

Ye

[odd mica]

I hope

explain it to me

[tropic panther]

Ok

Number 3 can be solved by the same way

[odd mica]

ok

i gtg now will see ya later

[odd mica]

@tropic panther ya need help now?

[tropic panther]

Only the last question left

[odd mica]

Still undone?

[tropic panther]

Nah its done ty but I got another question about integral

[dreamy isle]

@tropic panther has given 1 rep to @odd mica

[odd mica]

What is to be done?

[tropic panther]

Wdym?

Solve the integral

[odd mica]

Ok

[odd mica]

Are there no limits?

[tropic panther]

Let me check

[tropic panther]

Yeah

I forgot to put it

Oh wait

Wrong question

No there is no limits.

This is the original

[odd mica]

Ok

[odd mica]

You can separate them in u and v

Possibly

[tropic panther]

Wdym

By part?

[odd mica]

Yep

[tropic panther]

Lemme see

I cant see any progress

[odd mica]

Alright

Think about u-sub 2x-1

[tropic panther]

Yeah Ive thought about u sub

[odd mica]

What does it give tho

[tropic panther]

But the result is very big

Which can't be solved during exam

[odd mica]

I see

[tropic panther]

64 ∫ u^5/(u+7)^7

[odd mica]

Alright let's see

,w integrate (2x-1)⁵/(x+3)⁷ dx

[radiant widget]

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Requested by yes sam#5028

[odd mica]

[tropic panther]

Any progress?