Integration

YE INTEGRATION RAKHTE HI KYU HAI IN THE END SABHI SKIP KARDETE HAI NHI SOLVE HOTA differentiation ek had tak is cool samajh toh aata hai YE SALA INTEGRATION NE TOH DIMAG KHA LIA HAI HAR QUESTION EK NAI CHATTAN HAI IDK HOW TF I'LL DEAL WITH IT TOMORROW