Solve: (D⁴+2D²+1)y= x²cosx

[@swapnils3532]

Very much useful, as i have my exams Tommorow 😅... Great explanation sir....🎉

[@lemankumarsahusahu1860]

9:30 pe thoda mistake hua hai

[@ishugandhi7966]

Thank you Sir

[@lemankumarsahusahu1860]

I think Final answer will be- [(-1/4).{(X^4/12)cosx + (5X^2/4)cosx] +(X^3/3)(sinx/4)

[@rkchy]

watch completely ,i corrected in last

[@bhargav1685]

Speak like America's teacher 😅😅😅

[@rkchy]

ure wo wakt alag tha

[@pranavbhor6119]

Which reference book have this problems ?

[@rkchy]

try hk das

[@deckonstelugu9400]

Very useful

[@rkchy]

Thanks 👍 Watch out playlist, link in description

[@InInferno]

4:49 why replace D by (D+i)

[@rkchy]

That's the property for PI when we have e^ax f(x). We take exponent term out and replace D by D+a

[@rkchy]

You can refer concept from here kzbin.info/www/bejne/iWe9eXt_q8yejNk

[@InInferno]

@@rkchy thank u i got it

[@nabanitmajumder8596]

Tnx

[@wennzinang1449]

7:03 😢 i didn't get it ... What if there was x³ instead of x² .. 😅😅

[@rkchy]

Do the same way

[@prathamrao]

Why cant we solve this by normal method?

[@rkchy]

Some method is best for particular problems

[@prathamrao]

@@rkchy how to know when to use this method?

[@rkchy]

Whenever we have cosx or sinx in multiplication maybe

[@anshikasingh528]

Because if you use the regular method, then after putting f(D²) =f(-a²) it will result in 0 in denominator

[@Mounika-wb1st]

Cosx emindhi bro

[@rkchy]

Translate please!

[@Mounika-wb1st]

Where is cosx in last step

[@मनोरंजनकाखजाना-न7म]

Ads😮😮

[@udhishterbishnoi8395]

Sir aapka answer shi nhi h

[@udhishterbishnoi8395]

Hm gokhroo wali book me answer alg h

[@rkchy]

Pura dekho aur batao kaha galat hai

[@ZibaFact]

@@udhishterbishnoi8395 answer sahi hai, 12 ko common le lo bracket se

[@ankitsinghrajpoot6397]

In final answer where is COS X of particular integral

[@rkchy]

I forgot but corrected in last