Intermediate algebra

[girlpower]

When the graph of y=3 cos 2x achieves a minimum, find the value of the y-coordinate. help mee

 

[Deleted member 4993]

When the graph of y=3 cos 2x achieves a minimum, find the value of the y-coordinate. help mee

You have been told before (at least 5 times) - you need to show work to get help. At least, I need some effort from you to work with you.

What method/s have you been taught to find minimum of a function?

At what value of Θ you get minimum of cos(Θ) when 0≤Θ≤2π?

 

[girlpower]

I haven't any been taught any methods of function but I need help.

 

[DrPhil]

I haven't any been taught any methods of function but I need help.

If this is a placement exam, they have to ask questions that you haven't been taught yet - that is what they need to find out. I think you should review what you DO know, if it has been a while since you took an algebra class - but do NOT attempt to learn something new!