# mathematical induction help

#### t_n_k

Joined Mar 6, 2009
5,455
Conversion would be ...

$$\sum ^{n}_{i=1} 3^i=\frac{3^{(n+1)}-3}{2}$$

There are numerous on-line examples of the proof of sums of geometric progressions by induction.

Joined Jul 7, 2009
1,583
How is induction going to help? I only thought that was relevant to motors.

#### steveb

Joined Jul 3, 2008
2,436
How is induction going to help? I only thought that was relevant to motors.
No induction can also be used for heating things up very quickly. I think the connection is that those crazy formulas heat up the gray-matter just as efficiently, and hence must be caused by the same fundamental effect.