method of differentiation by pankaj sir(saharsa)

[@Physicsbyrinkusir]

Bahut khoob sir

[@creativemathematics-pankaj631]

🙏🙏🙏🙏🙏

[@SATISHYADAV-wn5dh]

Sir you are really great ❤️❤️🙏🙏

[@bindasskaran8335]

🙏🙏🙏🙏

[@Rahul_kumar41]

Good morning sir

[@aryan6041]

Sir Ji video saaf Nahin aa raha hai

[@bindasskaran8335]

I miss you sir 😥😓

[@Bhakti_adda]

Sir live kb se start hoga

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Hello sir

[@LokeshKumar-ow3tsabb]

Hi

[@AbhishekKumar-yu8gu]

I miss you sir 😢