M3 is not a tough job. Integration and differentiation are the most widely used application
solutions for arriving values for functions. Now on subject " Maths is a skill so practice it daily don't learn but understand and work it out ". Skill like playing carrom will be difficult , if you play once in a while . Practice , Practice Practice..
Another note is that before you begin look into the formule and ask 5 Questions before you start
1.What is GIven in question?
2.What i know about this ?
3.How can i solve this ?
4.Why am i solving in this pattern ?
5. Am i doing it correctly ?

Surely you will succeed . All the best , if  you have any doubts write to me ..