Answer to Question #59573 in Calculus for RITA

Question

1. Given that A=sinti + costj + tk , evaluate ∣d2A/dt^2∣
(a) 4 (b)1 (c) 3 (d) 2

3 A particle moves along the curve X = 2t^2, Y = t^2 − 4t and z = 3t − 5, where t is the time. Find the components of the velocity at t = 1 in the direction i −3j+2k

(a) 8√(14)/7

(b) −2√(14)/7

(c) 3√(14)/7

(d) −5√(14)/7