Starting at a particle moves along the axis so that it's position at time is given by . For what values of does that particle take while moving to the left?

Answer:

Any starting hints on how this came to be? http://www.freemathhelp.com/forum/im...s/confused.png Note: This is the complete problem given.

Perhaps the answer is tosimply graph the functionhttp://www.freemathhelp.com/forum/im...n_confused.gif Then you can see what values the function takes as it goes left from .

But the problem is that a graph goes on forever to the left. So how can there be a left interval? http://www.freemathhelp.com/forum/im...s/confused.png

But perhaps this is some kind of flipped graph, where time is on the axis rather than the one. (Happy) Yeah, I think that's the problem.