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question about rank error in function
I tried to abstract the Newton-Raphson method in this function, where the user can input a value of c, a first guess x0, and p, the value at which x is raised. However i get a rank error when applying it to for example:
fbis [2; 1; 3].Can someone explain why?
fbis : {[c_, x0, p_] {[xn ; c; p] xn – ((xn xexp p)-c)%(p * xn xexp p-1)}[; c_; p_]\[x0]}
Thank you!
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2 Replies
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, rather than ; separating the arguments of fbis. Otherwise runs fine:
q)fbis:{[c_;x0;p_]{[xn ;c;p] xn-((xn xexp p)-c)%(p*xn xexp p-1)}[;c_;p_]\[x0]}
q)fbis[2;1;3]
1
1.333333
1.263889
1.259933
1.259921
1.259921
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thank you!
Silly mistake
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