Find rational zeros of the function

Which function is odd check all that apply a. y=sin x b. y=csc x c. y=cot x d. y=sec x

Asequence {an} is defined recursively, with a1 = 1, a2 = 2 and, for n > 2, an = an-1 an-2 . find the term a241. a) 0 b) 1 c) 2 d) 1 2

Find the solution of this system of equation -7x+y=-20 9x-3y=36