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need your help in Newton method

hi everyone can u please help me to explain newtons method to minimize logarithmic ( y=a- b (ln x) and parabolic equation? and pleass post its program also..

thank you in advance...
Oct 24 '08 #1
2 1515
r035198x
13,262 8TB
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Please read the posting guidelines .
Oct 24 '08 #2
JosAH
11,448 Expert 8TB
hi everyone can u please help me to explain newtons method to minimize logarithmic ( y=a- b (ln x) and parabolic equation? and pleass post its program also..

thank you in advance...
It's just a bit of math: x(n+1) == x(n) - y(x)/y'(x). The first derivative of y(x) w.r.t.
x can easily be found; even if you can't find it you can approximate it by:
y'(x) ~ (y(x+h)-y(x-h))/2h + O(h^2)

kind regards,

Jos
Oct 24 '08 #3

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