28 Replies
@Apu
Note for OP
+solved @user1 @user2... to close the thread when your doubt is solved. Mention the users who helped you solve the doubt. This will be added to their stats.Summation aati hai
?
,rotate
I think ye summation se hona chahiye
Yep. For 2n, write it as $\sum{j=1}^{2n} j^{2} + 4 \cdot \sum{k=1}^{n} k^{2}$
SirLancelotDuLac
*Sum till 2n.
And use the formula for summation of n^2.
Yupsies
I think it should be 8 * Ek²
I tried it using summation lekin mera expansion bahut bada aa raha tha
I tried to separate the sum of squares of odds and the sum of squares of evens taking two common and did the expansions separately
It should be 4 no? from 2.(even)^2 we take out one even to form sum of n^2 and grouping others and taking out common to get 4.sum(squares).
yea got it i was doing it a bit diffrently
my bad lance ji
nahh waise mat karo
wo lamba padega
Lance ji ka method zyada simple hai
maine bhi pehle waise socha tha
ki odd ka alag aur even ka alag but that does indeed get unnecessarily lengthy
Could you please explain in more detail
Wait Imma write it out...
Look at the upar wala
so now agar aap in dono terms me
summation lagaoge
then it would be this
for A take n=10
and for B you would take n=20
Oooh so all the terms that have 2.something you split it up as (something + something) and tried to create two different simpler summations
yess
nahi to if went for the
odd ka summation alag and even ka summation alag
answer tab bhi aata
par yaar kon a2 aur a ka summation lagaye
bahot bada ho jaega
this is better
Haan sahi bol raha hai
Thank you yaar
thank lance
nahi to mai bhi wahi batane wala tha 💀
💀
yea im not the sharpest tool
Thanks a lot man
Relatable
🫂
Thanks a lot man. 🙏
thanks to you fr merko to ye click hi nahi hua tha
Thanks for the help man
+solved @Phalawor @SirLancelotDuLac
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