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Plotting the R(n) and compute n

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James
James 2013-9-24
评论： James 2013-9-30
Help please im so lost
Let Rn denote the equivalent resistance of n resistors connected in parallel, each having resistance R for n = 1, 2, 3, etc. It can be shown that Rn is governed by the following recursive relation:
R(n+1) = R(n)R/R(n), where n = 1,2,3,... with R1 = R (a) Given R = 10kΩ, write a MATLAB program to plot Rn versus n for n = 1, 2, . . . , 100. (b) For a given R and a positive integer m, write a MATLAB function that utilizes the while loop to compute n such that Rn = 10−mR.
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James
James 2013-9-30
编辑：James 2013-9-30
I got part a but Im stuck on part b
function [R] = func(m)
r = 10000;
while (m ~= 0)
R = (10^(-m)*r);
m = m - 1;
end
this is my code it keeps giving me the error and im not sure why EDU>> func(m) Undefined function or variable 'm'.

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回答（1 个）

Honglei Chen
Honglei Chen 2013-9-30
You need to pass in a number or define m first, for example
m = 3
func(m)
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James
James 2013-9-30
Thanks for the help but im still getting the same error where would you put the info that you provide in my code? Im probably over thinking this.

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