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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.)
 2 years ago
 2 years ago
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.)
 2 years ago
 2 years ago

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ggrreeBest ResponseYou've already chosen the best response.1
hm. have you learned derivatives yet?
 2 years ago

NazymaBest ResponseYou've already chosen the best response.0
That's the graph http://www.wolframalpha.com/input/?i=y%3D5cos%28x%29
 2 years ago

ggrreeBest ResponseYou've already chosen the best response.1
ok, so all you have to do is draw out the function and I guess just look at it.
 2 years ago

NazymaBest ResponseYou've already chosen the best response.0
yes, but can you plz exactly say where it is increasing?
 2 years ago

ggrreeBest ResponseYou've already chosen the best response.1
notice that it starts at 5, right? it keeps going up from there. it's still moving up once it crosses the x axis.
 2 years ago

ggrreeBest ResponseYou've already chosen the best response.1
once it hits pi, it starts to move down instead.
 2 years ago

ggrreeBest ResponseYou've already chosen the best response.1
therefore your answer is [0, pi]. hopefully that helped.
 2 years ago
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