Kaleidoscope
New member
- Joined
- Sep 10, 2010
- Messages
- 1
Hello, Free Math Help forums! I hope I'm posting in the right section. I am taking a High School-level Pre-Calculus course.
I took some early-level calculus in 2007, but didn't continue and subsequently have forgotten much of what I'd learned then. To refresh myself, I have decided to take a grade 12 Pre-Calculus, but I'm having a bit of trouble getting myself back into everything! I don't want to go back farther than this, and I'm sure that once I get into the swing of things this will all be a breeze, but for the moment I'm a little bit tripped up over a cubic function question.
The question is thus:
If f(x) = x^3 + 3x^2 - x + 6, write an unsimplified formula for
a) g(x) which has the same graph as f(x) moved 2 units to the left
b) h(x) which has the same graph as f(x) moved 3 units down
Now, as far as moving it three units down, I'm fairly confident that this would just be changing the 6 for a 3. Moving the graph horizontally, though, I'm less confident in. I'm also not sure what is meant by "unsimplified formula," is the cubic in something other than a "simplified formula" already?
I'm also not really sure, anymore, about factoring cubics. Looking at that thing, I don't think that I can do any meaningful factoring to it, but I could be wrong?
Thank you so much for your time
I took some early-level calculus in 2007, but didn't continue and subsequently have forgotten much of what I'd learned then. To refresh myself, I have decided to take a grade 12 Pre-Calculus, but I'm having a bit of trouble getting myself back into everything! I don't want to go back farther than this, and I'm sure that once I get into the swing of things this will all be a breeze, but for the moment I'm a little bit tripped up over a cubic function question.
The question is thus:
If f(x) = x^3 + 3x^2 - x + 6, write an unsimplified formula for
a) g(x) which has the same graph as f(x) moved 2 units to the left
b) h(x) which has the same graph as f(x) moved 3 units down
Now, as far as moving it three units down, I'm fairly confident that this would just be changing the 6 for a 3. Moving the graph horizontally, though, I'm less confident in. I'm also not sure what is meant by "unsimplified formula," is the cubic in something other than a "simplified formula" already?
I'm also not really sure, anymore, about factoring cubics. Looking at that thing, I don't think that I can do any meaningful factoring to it, but I could be wrong?
Thank you so much for your time