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ok thanks a heap mate, i can safely bet u saved me some marks! <3

ah ok i get it. so its like the only time the mode matters is when u need to find out the non-exact value(eg. not an angle like tan pi/4 which has an exact value) of a trig ratio of an angle, and u should look at the domain to figure out if the angle is in deg/rad and change ur calc mode to suit...

ok cool thanks so i just put it back into degrees mode for trig calculations involving degrees. now just hoping i remember to!

hey guys, a bit uncertain with using degrees / radian modes on the calculator... when do you NEED to use degree mode and when do you NEED to use radian mode and if there is no time when you NEED to use degree mode(not sure if there is or isnt) then can u just leave ur calc in radian mode...

def 10b.....that was amongst the only tricky questions in the test, most of it qas relatively straightforward

sweet hope your teacher's right! lol

yeah you seem to have done the same as me, this is a correct method to use isnt it?...it would be kinda stupid if it wasnt but u never know...do u reckon we get 5/5?

do i still get 5/5? ;)

hmm i didnt do it the way most people did. I used the fact that if you differentiate (x-2)ln(x-2) then u get ln(x-2) + 1, then did integral from 3 to 7 of ln(x-2) + 1 minus integral from 3 to 7 of 1, using (x-2)ln(x-2) as the primitive of ln(x-2) + 1. I still got 5ln5 - 4, so would...