Find dy/dx given that y = sin x / 1 + cos x​

Step-by-step explanation:

differentiating numerator wrt x :-

(sinx)' = cos x

differentiating denominator wrt x :-

(1 + cos x)' = (cosx)' = - sinx

Let's say the denominator was "v" and the numerator was "u"

here,

since u is the numerator u= sinx and u = cos x v(denominator) = 1 + cos x; v' = - sinx

since cos²x + sin²x = 1

diving numerator and denominator by 1 + cos x

In all honesty, there really is no “work” per say to show. mainly it’s just using the process of elimination. the question is asking which domain(s) would be the most appropriate for the function c(n). n is the number of observed vehicles so right away, 1, 2, and 3 can be eliminated.why? 1, 2 start in the negatives and therefore it is impossible to observe negative cars. so, #4 would be the best answer to the given problem.