Recent content by bold

never mind... you know, sometimes i wonder about myself...

I'm given the sequence t(n) = 3 (-1)^n (0.5)^n ; n >= 1 It first asks for the sum of the terms t(1) + t(2) + ... + t(99) which is fine, but it follows up by asking the sum of t(1) + t(3) + t(5) + ... + t(99). Would i be using partial sums to solve this? If so, i don't know how to find...

I had to make an extension outside of the circle, but I got it!

This is the last problem on a geometry problem set that I can't seem to finish. AB and BC are chords in a circle where AB > BC. D is the midpoint of minor arc ADBC. If DE is perpendicular to AB, prove that AE = EB + BC. I would really appreciate just the proper way to approach this...