Newton's method of approximation. AGAIN. (1 Viewer)

Smilebuffalo

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Use x = 0.5 to find an approximation to the root of cosx = x, correct to two decimal places, using 2 applications of Newton's method.

Answer: x = 0.76
 

Trebla

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Did you remember to use RADIANS on your calculator when subbing in x = 0.5 as opposed to degrees?
 

Smilebuffalo

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yea i did. The question is weird because i get the answer right using 1 application of newton's method. But using a 2nd application results in a less accurate answer that is not equal to 0.76
 

Timothy.Siu

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yea i did. The question is weird because i get the answer right using 1 application of newton's method. But using a 2nd application results in a less accurate answer that is not equal to 0.76
i got a different answer too, but it isn't less accurate.
 

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