The problem of diagonals. Creating a pattern that fits our bill.
A problem of degrees. Creating a pattern that fits our bill.
total
amount per angle
Arithmetic Sequences:
a_n = d(n-1)+a_1
don't be afraid fo a fraction--spell it out!
what about summing them up?
bricks in a patio
you want proof? I do.
summation notation
Geometric sequences:
same set up as before!
do it right!
what about summing them up?
this is a harder proof by induction