Question

S(t)=3+2t+t^2 определите скорость и ускорение t1=1 и t2=3c

Answer 1

v ' (t) = (3 + 2t + t^2)' = 2 + 2t
a ' (t) = (2 + 2t)' = 2

v'(1) = 2 + 2*1 = 2 + 2 = 4
v'(3) = 2 + 2*3 = 2 + 6 = 8