1. ## how to graph??

hey, i was just wondering how I would graph these equations step by step. I have a quiz on them tomorrow and I can't figure them out.

1) y = x(squared)(multiplied by)e(to the x)

2) y = (lnx)(squared)

2. Here are the above questions using Latex:

1. $\displaystyle y=x^2e^x$

2. $\displaystyle y= \ln{x^2}$

3. Originally Posted by wynd90
hey, i was just wondering how I would graph these equations step by step. I have a quiz on them tomorrow and I can't figure them out.
What do you have to work with? For example, a calculator, a log table, etc.

4. ## nothing to use

hey, i have nothing to use except a scientific calculator and a piece of paper

5. Great, you have a calculator.

MathMan, I think
y = (lnx)(squared)
means $\displaystyle y=(ln \, x)^2$

You need x-intercept, y-intercept, extrema (you might not get all three because some functions do not have some), and a few points. You must know the domain (x-range) so you know what to plot. Ask, or determine yourself.

1. Find those by hand or by a calculator... just plug x into the function. A calculator produces a much better estimate for the points.
2. Plot them.
3. Connect the dots as smoothly as possible.