Given that x=3cos theta , Y= 2cos ( theta- pie/6) i)show that dy/dx=1/3( square root of 3- cot theta)

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.3: The Addition And Subtraction Formulas
Problem 79E
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Given that x=3cos theta , Y= 2cos ( theta- pie/6)

i)show that dy/dx=1/3( square root of 3- cot theta)

ii)given that f(x)=ex-3x

iii)Show that a root ,alpha, of the quation f(x)=0 lies in the interval 1<x<2

iv)With x=1.5 use one iteration of the newton raphson procredure to find to 2 decimal places  and approximate value of pie

 

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