All right, I thought so. Well we did a similar one that my notes give an odd answer for.
"How many ways are there to seat 5 boys and a 5 girls at a round table so that boys and girls alternate?
For circular arrangements, (n-1)! possible arrangements
I have two questions. I'm not sure if I'm allowed to post two at once so I'll start with one
"Twenty boys and twenty girls are to take a ride on a Ferris wheel with twenty pods. How many ways can they be arranged if each pod is to contain one boy and boy girl"
1. How many vertices will the following graphs have if they contain:
(a) 12 edges and all vertices of degree 3.
(b) 21 edges, three vertices of degree 4, and the other vertices of degree 3.
(c) 24 edges and all vertices of the same degree.
(a) Find approximate values of the solution of the given initial value problem at t = 0.1, 0.2,
0.3, and 0.4 using the Euler method with h = 0.1.
yn+1 = yn + f(x0, y0)(x-x0). Adjusting 0 for the next number as we go up
The Attempt at a...
((cos x)/(1+sin x))+((1+sin x)/(cos x))
The Attempt at a Solution
multiplied the left equation by (cos x)/(cos x) and the right fraction by (1+sin x)/(1+sin x)
get ((cosx)^2 +(1+sinx)^2) / (1+sinx) (cos x)
and I have no idea where to go from here