# Math Help - Boat and Ambulance Problem

1. ## Boat and Ambulance Problem

Hi.

So this problem-

http://www.rtmsd.org/74417169134649/..._SOLUTIONS.pdf

I was looking at this problem as a homework assignment, and I don't understand what the purpose of $T^1$ is... and how it becomes 0.

Thanks.

2. Originally Posted by ns2583
Hi.

So this problem-

http://www.rtmsd.org/74417169134649/..._SOLUTIONS.pdf

I was looking at this problem as a homework assignment, and I don't understand what the purpose of $T^1$ is... and how it becomes 0.

Thanks.
Its T', which means its the derivative, in the answer they solve that for zero. So what they do is

1.Derive the T formula
2.Set it equal to zero
3.Solve X