## aceace Group Title Sigma Notation Question!!!! one year ago one year ago

1. aceace Group Title

2. aceace Group Title

What's the easy way of doing it?

3. aceace Group Title

I think the answer is three?

4. Algebraic! Group Title

yep

5. aceace Group Title

Yaay

6. Algebraic! Group Title

there's problem a general expression for the sum, don't know what exactly it is, but it's easy enough to see... $(\sqrt[4]{1+1} -\sqrt[4]{1}) +(\sqrt[4]{1+2} -\sqrt[4]{2}) + (\sqrt[4]{1+3} -\sqrt[4]{3})...$ 1st and 4th terms cancel, 3rd and 6th terms cancel... etc. all terms cancel but the second and last