Here's a Math StackExchange thread that gives the procedure I'm familiar with: https://math.stackexchange.com/questions/443555/calculating-the-inverse-of-a-mult

Here's a Math StackExchange thread that gives the procedure I'm familiar with: https://math.stackexchange.com/questions/443555/calculating-the-inverse-of-a-multivector https://math.stackexchange.com/questions/443555/calculating-...