Integration by substitution Short trick

Question on rational algebraic function || Short trick OF some trigonometric integration

JEE MAINS Short Tricks | Shortcut To Solve Integration | Maths Time Saving Tricks |JEE Mains 2020

INDEFINITE INTEGRATION | INTEGRATION BY PARTIAL FRACTION | Amazing Short Trick For JEE Main, BITSAT and NDA

JEE Main Super Short Trick || Trick For Determinants | 10 Second Trick

INDEFINITE INTEGRATION | SHORT TRICK | JEE Mains 2018 Online Question

INTEGRATION SHORT TRICK of Form int 1/(3x^2 + 7x +9) || Solve in 5 Seconds