Trial & Improvement Saturday, 13 April 2019.

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Presentation transcript:

Trial & Improvement Saturday, 13 April 2019

x = 6.9 to 1 decimal place Example Adam is trying to solve the equation by trial and improvement. Work out the value of x correct to one decimal place x Comment 6 6.1666... Too small 7 7.14285... Too big 6.8 6.94705... Too small 6.9 7.0449... Too big 6.85 6.9959... Too small x = 6.9 to 1 decimal place

x = 1.7 to 1 decimal place Example Ellen is trying to solve the equation by trial and improvement. Work out the value of x correct to one decimal place x Comment 2 11 Too big 1 4 Too small 1.6 8.896... Too small 1.7 10.013 Too big 1.65 9.44... Too small x = 1.7 to 1 decimal place

x = 4.4 to 1 decimal place Example Assad is trying to solve the equation by trial and improvement. Work out the value of x correct to one decimal place x Comment 5 120 Too big 3 24 Too small 4 60 Too small 4.5 86.625 Too big 4.3 75.207... Too small 4.4 80.784... Too big 4.35 77.96... Too small x = 4.4 to 1 decimal place