Question

Differentiate
f(t) = cost/t

Answer 1

You must use the differentiation rule of the quotient,
\[\left(\frac{f(t)}{g(t)}\right)=\frac{f'(t)g(t)-f(t)g'(t)}{g^2(t)}\]
Where f(t)=cos(t), and g(t)=t.

Answer 2

Got it! Thank you! @John_ES

Answer 3

You're welcome.