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anonymous
 one year ago
Choose another quadratic surd in the range root 3 to root 23 and find four successive rational approximations,each of them accurate to within 10^4 of the true value of the surd chosen. use the easiest starting point you can find.
anonymous
 one year ago
Choose another quadratic surd in the range root 3 to root 23 and find four successive rational approximations,each of them accurate to within 10^4 of the true value of the surd chosen. use the easiest starting point you can find.

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ZeHanz
 one year ago
Best ResponseYou've already chosen the best response.0Do you mean the use of Newton's method for approximation of (square) roots?

ZeHanz
 one year ago
Best ResponseYou've already chosen the best response.0In that case, suppose you want to find an approximation of, say \(\sqrt 7\), consider the function \(f(x)=x^27\). It's roots are \(\pm\sqrt 7\). We only need the positive root. Here is a drawing of the graph:

ZeHanz
 one year ago
Best ResponseYou've already chosen the best response.0Also remember that the equation of a line through a given point \(P(x_p, y_p)\) and slope \(m\)is: \(yy_p=m(xx_p)\). Newton's method works as follows: pick a point \(P_1\) on the graph. The xcoordinate of \(P_1\) is \(x_1\). The tangent line in this point has slope \(m=f'(x_1)\). We now have this line: \(yf(x_1)=f'(x_1)(xx_1)\). The intersection of this line with the xaxis is the first approximation of our root.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Nope sorry i shoudve specified. continued fractions

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0or not completely sure, is there any other way? the homework is titles continued fractions so im assuming, ive never been taught newtons method, so it cant be that.

mathmate
 one year ago
Best ResponseYou've already chosen the best response.0@Maretch Have you learned how to do continued fractions for any number, or mainly for squareroots?
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