Calculus Problems

Wondering if anyone can do this, if you can show me.
















thanks in a heap

 

to start off, the first three graphics are negative. the circulation are parallel to the flux.

 

whoah calculus is hard !!! i never learnt that from add maths ... is seem's familiar .

 

That is engineering math -Statistic which I've done that in year 2 but had already forgotten all that....

 

Hahahaha...I remember seeing that in my 1st year cal class but man...I didn't study hard for that at all...It was the last thing we learnt n' I assumed that it was not gonna be on the exam and I was right...So I don't remember how to do it at all...Good Luck dude!

 

i remember doin something like Q5 last yr
cant remember now

 

o god im still in calc 2 in college