4808pset2

# 4808pset2 - 2 2 1 1 2 1 3 2 k x x k x x = = a 1 2 2 1-= = k...

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Economics 4808 Problem Set 2 1. Solve the following using augmented matrix methods a. 1 5 2 1 2 1 = - = + x x x x b. 8 4 2 4 2 2 1 2 1 - = + = + x x x x c. 3 2 2 4 2 1 2 1 - = + - - = - x x x x Perform the indicated operations: 2. 2 2 - 1 1 - 4 1 1 2 1 - 1 0 2 3. + 1 3 - 4 1 0 1 - 1 - 2 4. Verify each statement using the following matrices: = 1 0 2 1 A = 3 2 1 1 B a. AB ≠ BA b. A(B + C) = AB + AC

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5. Find the inverse (if it exists): 0.5 2.0 0.5 0 . 1 6. Write the system as a matrix and solve each part using the inverse.
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Unformatted text preview: 2 2 1 1 2 1 3 2 k x x k x x = + = + a. 1 , 2 2 1-= = k k b. , 1 2 1 = = k k c. 1 , 3 2 1-= = k k 7. Where is the following function discontinuous? 6 x x 5 x ) x ( f 2---= 8. Find the limit: a. ) 1 x ( 2 x 3 x lim 2 1 x--+ +-→ b. lim x x x → ---3 3 3 c. h x f h x f h ) ( ) ( lim-+ → if x 6 x ) x ( f 2 + =...
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## This note was uploaded on 09/19/2011 for the course ECON 4808 taught by Professor Edwardmorey during the Spring '06 term at Colorado.

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4808pset2 - 2 2 1 1 2 1 3 2 k x x k x x = = a 1 2 2 1-= = k...

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