Derivation of beat frequency formula (Hindi)

In this video Ram derives the formula for beat frequency.

[komxlk]

I absolutely love these Khan Academy videos in Hindi. I live in U.S.A. and my college classes always use Khan Academy and i recently discovered the India-Hindi youtube channel and i have been using it and my understanding of math has increased. Khan Academy has made me fall in love with Mathematics. I've just changed my major to Mathematics and i am so Inspired by Khan Academy to teach one day. Thank you so much!! - Komal

[Buddy-qbsw]

Do problem hai, n2 =n1-1 hamesha hona zaroori nahi hai, doosra wo jo, 'ye maine tumhare liye pehle se solve karke rakha hai' wo waala part elaborate karna

[rajrinku]

Superb😘😘....keep it up sir love and respect for you😘😘

[asutosyadav]

Sir ji Analytical method se kaise proof hoga