for the 2nd order nonhomogenous ode y''+4y = 10sin(9pi x t)

Calculate the distance between the two building corners Q and R and the perpendicular distance PS to the building using the interior angle measured at P and the two measured distances PQ and PR. SI 58.334m 123° 15' 57" 61.901m

Ex. 5) For R and Q functions and given that: Q(-1) = 5, R(-1) = -4, R(5) = 7; || Q'(-1) =-3, R'(-1) =2, R'(5) =-1 If f(x) = R(Q(x)), then evaluate f"(-1). f"(-1)=