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Statistics for Economists

10 Pages1149 Words63 Views
   

Added on  2023-01-10

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This document provides solutions for various statistics problems for economists. It includes topics such as differentiation, integration, cost and profit maximization, and solving linear equations. The solutions are explained step by step.

Statistics for Economists

   Added on 2023-01-10

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Statistics for Economists
Statistics for Economists_1
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Question 1:
Solutions
(a)
(i) f(x) = 5x4 – 3x-3
f’(x) = 20x3 + 9x-4
(ii) f(x) = 4x + 3
3x – 1
= 4 (3x – 1) – (4x + 3) (3)
(3x – 1)2
= 12x – 4 – 12x + 9
(3x – 1)2
= 5(3x – 1)-2
2
(iii) f(x) = 2ex
f’(x) = 2. 2x. exp.(x2)
= 4x. exp.(x2)
(b)
(i) x2 + x – 110 = 0
x2 + 11x – 10x – 110 =0
1
Statistics for Economists_3

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