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Problems for Sections 10.3 and 10.4

1. Given that a, b, c, d, x, y, z, and w are positive real numbers, prove the following

[from (a) to (z)]:

(a) If x + y = 2, then 

(b) If xyz = 1, then 

(c) If xyz = 1, then 

(d) If x + y + z = 1, then 

(e) 

(f) 

(g) 

(h) 

(i) 

(j) 

(k) 

(l) 

(m) 

(n) 

(o) 

(p) 

(q) 

(r) 

(s) 

(t) If x + y + z = 1, then 

(u) If x + y + z = 1, then 

(v) 

(w) If x + y + z + w = 1, then 

(x) 

(y) 

(z) If x + y = 1, then 
 

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Monday, June 22, 1998