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Nazyma
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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
Nazyma Group Title
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

This Question is Closed

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

Nazyma Group TitleBest 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

ggrree Group TitleBest 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

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

ggrree Group TitleBest 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

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

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

Nazyma Group TitleBest ResponseYou've already chosen the best response.0
oh, thanks so much)
 2 years ago
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