Syntax help: Linearly spaced vector and simple algebra

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zizo
zizo 2011-6-13
How i write this in MATLAB
t=1790 to 2000
p(t)=197,273,000/(1+e-0.0313(t-1913.25)

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采纳的回答

Laura Proctor
Laura Proctor 2011-6-13
t = 1790:2000;
p = 197273000./(1+exp(1)-.0313*(t-1913.25));

更多回答（1 个）

Walter Roberson
Walter Roberson 2011-6-13
Hints:
  1. e is coded as exp(1) if you are talking about the base of the natural logarithms.
  2. you need a multiplication symbol before your final '('
  3. you need to have the same number of ')' as you have '('
  4. commas are not permitted as thousand groupings in numbers
  5. http://www.mathworks.com/help/techdoc/ref/for.html
  6. are you really using e as a single constant, or does your original formula have e raised to some power? If it does have e raised to a power, see http://www.mathworks.com/help/techdoc/ref/exp.html

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