Question

could someone help me out with 14? i tried it and I get that it uses chain rule and second derivative but I’m so lost please help

Answer 1

None of these (see below).

Explanation:

y = m cos pt - n sin pt

Using the chain rule:

dy/dt = m * -sin pt * p - ( n * cos pt * p)

= -mp sin pt - np cos pt.

dy/dt^2 = -mp * -cos pt * p - (np * - sin pt * p)

= mp^2 cos pt + np^2 in pt.