He's on the rail jet.

Now will this help us think about the design of more effective climbing robots?

Rail jet departing.

You owe the bureau for two Sets of allweather radials.

Dan Koditschek put some steel nails very simple version on the robot, and here's RHex, now, going over those steel those rails.

I take a car.

I take a bus.

Well, that's not necessary.

Okay. You got a car?

Are we going to take a cab?

HORN HONKS you there! Bus!

I experience nausea when I go on too many rides.

Let's slow it down and you can see the spines in action.

She was as thin as a rail.

I'll take the next bus.

I take a bicycle.

No. I'm assigned to the Enterprise.

Do you want a ride?

Getting on?

Yeah. One track was bent. That's why it was bouncing.

She starts her day with lifting weights.

So we have x times x squared to the third power, over 3.

This is looks like a perfect square, right?

20 divided by 4 is 5.

And a squared divided by a squared is just a.

Do you still fly it?

And similarly, you decrease again, you're dividing by a.

Someone stop this contraption, please!

I'm catching the 11 00 train.

You'll miss the train.

That's right.

So what does our expression simiply to?

What quantity should be added to both sides of this equation to complete the square?

And we're just left with C times 2 minus 1, so that's just 1 so C is equal to 6 times 4, right?

And we're going to take the length of that whole thing squared.

Five plus two!

Or it's y to the first, times y to the first, which is also y squared.

Now, let's square both sides of this equation. i squared squared is equal to negative 1 squared.

So they want us to figure out what that is equal to.

You sold me.

(Beatboxing)

I can have somebody bring it downtown for you.

So let's multiply both sides of this equation by negative 2.

I'm going to take the 10 30 train.

And if you take i to the eighth, once again it'll be one,