Question 6 (1 mark) Question The derivative of the function y = ex cos x is y' = ( cos x - x sin x ) ex cos x Answer O A Truc B False Question 10 (1 mark) Qucation The plane passing through the point P(2,3,1) with normal vector 54 27+4/ has equation 5x+2y+4>=20 Answer O A True O B False Question 11 (1 mark) Question The plane passing through the point P(1,1,4) with normal vector 52+ 27+3k has equation 56+ 27+3k=19 Answer OA True FalseQuestion 13 (1 mark) Question Given an initial guess , the next approximation to the solution of =1-13 using Newton's methods $1 =10-7-312-1) 1-13-10 Answer O A True O B False Question 14 (1 mark) Question The parametric equations of the line passing through the point P(0,2,1) with direction vector c= 3i+4k are 1=3t . y=2 and 2=1+4+ Answer A True O B False Question 15 (1 mark) Question The plane passing through the point p(4,3,1) with normal vector 64+ 27 4 3* has equation 64+27+3k=33 . Answer O A True O B False