hossam khattab qatar academy extended mathematic 9b n.
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Hossam Khattab – Qatar Academy – Extended Mathematic 9B. Landscape Problem Part 2. Evaluating M y Results – Good Points. My results, although partially incorrect make partial sense in context of problem First “x” value was 2.82 made sense for most of the problem

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evaluating m y results good points
Evaluating My Results – Good Points
  • My results, although partially incorrect make partial sense in context of problem
  • First “x”value was 2.82 made sense for most of the problem
  • Gave both sides equal when substituted into 480x - 1360x + 15 = 0. Also gave correct reasonable measurements when put into total area equation.

2

evaluating my results bad points however
Evaluating My Results – Bad Points (However)
  • When finding the size of Famer 2’s land, the size was unreasonable in context
  • Farmer 2’s land was approximately 4 times that of Famer 1, disagreeing with the diagram presented to us
  • Other “x” value, 0.01 was too small, and didn’t fit in when substituted back into either equations (area or quadratic)
degree of accuracy
Degree of Accuracy
  • Did most calculations to 2 decimal places (1 cm)
  • Reasoning: People would only reasonably measure land to a single cm (probably even less accurate in many cases)
  • Anything else would be far too tedious to measure
impact of degree of accuracy
Impact of Degree of Accuracy
  • In my calculations, Farmer 2 gains approx. 1.3 meters of land
  • This in turn costs him approx. $3250
  • Working to smaller degree would’ve made him pay less
  • This wouldn’t be applicable in real life due to tediousness of measurements
solving the problem alternately
Solving the Problem Alternately
  • Dividing land into crops, then each farmer receives their percentage of each crop:

Wheat

Carrots

Potatoes

Lettuce

F A R M E R 2 ‘ S P O R T I O N O F L A N D

F A R M E R 1 ‘ S P O R T I O N O F L A N D

use of quadratics in life
Use of Quadratics in Life

Launching Missiles

Building Bridges

use of quadratics in life contd
Use of Quadratics in Life – Contd.

Anticipating Ball Movement

Building Bridges