Hey Guys, I am having troubles with the last 2 questions:

Eliminate t to give an equation that relates x and y:1.

$\displaystyle x=e^{2t}$ and $\displaystyle y=e^{7t}+5$

The main problem is, I don't quite understand what they are asking for. I THINK, you would solve for t and then plug in t for y?

Such as:

$\displaystyle ln(x)=2t$

So, I would plug this into Y to get:

$\displaystyle y=e^\frac{7}{2}ln(x)$

** That lnx should be in the exponent as well**

Thoughts/comments?

2.

Eliminate t to give an equation that relates x and y:

$\displaystyle x=tan(t), y=sec^2(t)-4$

Again, I applied the same principles as above and got this:

$\displaystyle sec^2*atan(x)-4$

Both answers are wrong but I don't see how else you can interpret these questions.

Confused.