An idealized velocity fi eld is given by the formula V 5 4txi 2 2t 2 yj 1 4xzk Is this fl ow fi eld steady or unsteady? Is it two- or threedimensional? At the point ( x , y , z ) 5 ( 2 1, 1, 0), compute ( a ) the acceleration vector and ( b ) any unit vector normal to the acceleration.

BE 1500 – Fall 2016 HW 5 Due: October 13, 2016 (1:30 P.M.) 1. Write a code for repmat; the only built-in commands you are allowed to use are input, size, and disp. A=input('matrix '); [m,n]=size(A); z=input('replicated rows '); y=input('replicated columns '); for i=1:m for j=1:n B(i:m:z*m,j:n:y*n)=A(i,j);...