Math Is Fun Forum

Dharshi

Member

Registered: 2006-10-31

Posts: 56

Help me with these

(1) Prove that tan(x/2+pi/4) =sec x+ tanx
(2)Solve cos 2x =-1/2  for x. Give a general formula for all of the solutions. List six specific solutions.
(3) Given the function  f(x) = (3x^2+2x+2)/(x+3)
A)    Find all x and y intercepts.
B)    Find all of the asymptotes.
C)    Draw a number line to determine when the graph is above and below the x axis.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Help me with these

Hi;

http://www.mathisfunforum.com/viewtopic.php?id=14654

Please show some of your own work. We are not supposed to just reel off answers to homework problems. I do not know where you are stuck.

You must make some kind of effort to do your own homework. If you have no work on any of these then how about what you think?

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.