00:01
So let me just jot down this y equals t over x squared, and then we have plus x over t.
00:16
And i'm going to rewrite both of those.
00:18
So we have y equals t x to the negative second power plus x t to the negative first power.
00:26
Now the first thing that they asked you to do, i hope you understand that that's true because of the negative exponents.
00:34
If you move powers, you just have to change the sign of the exponent.
00:39
So the first thing they ask you to do is d -y -d -x, which means x is your independent variable.
00:44
So i -b for independent variable.
00:47
And t is a constant.
00:51
So what that means is as i do the power rule, move the exponent in front, you don't mess with the t.
00:59
You just leave it there.
01:01
And when you subtract one from negative 2, you get negative 3.
01:04
Same thing with the next one.
01:06
Move the negative 1 in front...