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PLEASE HELP ME!!!!!!! REALLY IMPORTANT!!!!!!!!! y = −5 cos x On what intervals within [0, T) is f increasing? (T is the period of the function. Enter your answer using interval notation. If an answer does not exist, enter DNE.)

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hm. have you learned derivatives yet?
not yet(
That's the graph

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Other answers:

ok, so all you have to do is draw out the function and I guess just look at it.
yeah, good.
yes, but can you plz exactly say where it is increasing?
notice that it starts at -5, right? it keeps going up from there. it's still moving up once it crosses the x axis.
once it hits pi, it starts to move down instead.
therefore your answer is [0, pi]. hopefully that helped.
oh, thanks so much)

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