how to orient the long label of the vertical axis "VERTICAL" ?

let F(n) is the nth fibonacci number. what is the limit

lim(n->infinity) f(n-1) / f(n+2)

for wha m the following inequality holds

(1+x)^(m+1) > 2^m*(x^m+x)

1<=x<=2

sum(((n+1)/n-1)*(12*n^2+12*n+1)/((1+((n+1)/n)^(1/3))*(12*n^3+18*n^2+6*n)), n = 1 .. infinity)

for what value or interval of p (-infinity < p < infinity) the following is valid

(1+x)^(m+1) > (1+x^m)* 2^m

here x > 1