Chapter 1.1, Problem 32P

D U(AUBUC) B D

Answer question 2.28 please.

I just need b,c,d

8. In the following check to see if the set S is a vector subspace of the corresponding Rn. If it is not, explain why not. If it is, then find a basis and the dimension. X1 (a) S = X2 {[2], n ≤ n } c X1 X2 CR² X1 (b) S X2 = X3 X4 x1 + x2 x3 = 0

5 Obtain by multiplying matrices the composite coordinate transformation of two transformations, first x' = (x + y√2+ z)/2 followed by y' = (x√√2-2√2)/2 z' = (-x+y√2-2)/2 x" = y" 2" = (x'√√2+2'√√2)/2 (-x'y'√√2+)/2 (x'y' √√2-z)/2.

What is the answer in 10.3

4 The plane 2x + 3y+ 6z = 6 intersects the coordinate axes at P, Q, and R, forming a triangle. Draw a figure and identify the three points on it. Also find vectors PQ and PR. Write a vector formula for the area of the triangle PQR and find its value.

A crate is supported by three cables as shown. Determine the weight of the crate knowing that the tension in cable AB is 750 lb

+ 32 in. B 36 in. 40 in. A 60 in. X 27 in.