I also need help with when they concave down and up. I need help as soon as possible.
Need help finding (a) Critical Numbers and (b) Inflection points for these two
2. ; 0 < or equal to x < or equal to 2pi
<--- Not sure if that's correct
I'm not very fond of trig functions and I need help with these two. I need help asap
the possible inflection points are the solution of
to check whether it is an inflection point, try to check the following:
let be a possible point of inflection.
if and are of different signs, then is an inflection point.
for concavity, if is a possible point of inflection, and if , then the fucntion is concave up on the interval ; if , then the fucntion is concave down on the interval
or (sec x is never zero)
I'm so stupid lol! I didn't set sinx = cosx and didn't know that I could do that. >_< I really need to go back and look over trig functions. Also I didn't even notice I was using the original function and not the derivative till you told me kalagota. Alright I'm gonna go back and finish the rest.
Tops, I don't add 360 to because the interval is 0 < or equal to x < or equal to 2pi?