# Is the first vertex of this equation a min or max?

• Jun 30th 2013, 03:15 PM
KevinShaughnessy
Is the first vertex of this equation a min or max?
Hi,

I'm a little confused because the answer key differs with the answer I found, so could someone tell me if the first vertex of the equation 2sin-(pi-x)+1 is a max or a minimum? I factored out the negative to get it into the right format (x-h) so that b and a are both positive, but the answer key has b negative (form is asinb(x-h)+k).

Thanks!
• Jun 30th 2013, 05:17 PM
Re: Is the first vertex of this equation a min or max?
I can't discern what the function is. jARe you trying to write $2sin[-(\pi -x)}]+1$ ???
• Jun 30th 2013, 09:00 PM
KevinShaughnessy
Re: Is the first vertex of this equation a min or max?
Yes, that's it.
• Jul 1st 2013, 06:15 AM
HallsofIvy
Re: Is the first vertex of this equation a min or max?
Well, that is, of course, the same as $2 sin(x- \pi)+ 1$. What does sin(x) look like just above $x= -\pi$?
• Jul 16th 2013, 07:18 PM
accessddd
Re: Is the first vertex of this equation a min or max?
I am crazy! I hate min and max!
• Jul 17th 2013, 06:49 AM
HallsofIvy
Re: Is the first vertex of this equation a min or max?
Okay, you are crazy. What was your point in posting that?