Homework Statement
Imagine a planet in the shape of a regular tetrahedron (its surface consists of 4 equilateral triangles). Suppose that on each face there is a car traveling at a constant speed in clockwise direction along the edges bounding the face. Can they travel without crashing...
Homework Statement
so I have learned how to do different problems of series.
but there's this problem that I spent hours last night but could not come up with anything.
which is-
∞
[SIZE="6"]∑ n/2^(n-1)
n=1
Homework Equations
I have no idea
The Attempt at a Solution
so...
Help with "series"
so I have learned how to do different problems of series.
but there's this problem that I spent hours last night but could not come up with anything.
which is-
∞
[SIZE="6"]∑ n/2^(n-1)
n=1
so from there i was able to take out 2 and end up with: 2...