1. The problem statement, all variables and given/known data Does the graph of the function y = 3x + 6sinx have any horizontal tangents in the interval 0 ≤ x ≤ 2 If so, where? 2. Relevant equations Derivative rules 3. The attempt at a solution I tried finding the derivative and setting it equal to zero. y' = 3 + 6(cosx) 3 + 6(cosx) = 0 but I'm not sure where to go on from here, the book only has 1 example which doesn't clear much up. also how do i write equations to make them look like some of the other posts i've seen(equation text lookΦ).