Masaken
Unknown Member
![1674039062007.png](/data/attachments/37/37490-af6c5f7005d121d1bddbbcedaf36cf14.jpg)
how to do this qn? i got stuck after doing the substitution u = 1 + sqrt(x), and i can't seem to get the substitution plugged in no matter what i do. help?
also, is there a general way on how to approach these sorts of questions where the substitution doesn't seem obvious to sub into initially? especially with square roots and exponentials, i have no idea
thanks in advance