# I need help writing equation in matlab

4 views (last 30 days)
matlab on 24 Jan 2023
Commented: Image Analyst on 25 Jan 2023
how do i write this equation in a matlab script

Image Analyst on 24 Jan 2023
Obviously we can't give you the full solution because you're not allowed to turn in our code as your own.
Some hints to get you started:
n = 5;
v = 1 : n
v = 1×5
1 2 3 4 5
denom = 1 ./ v
denom = 1×5
1.0000 0.5000 0.3333 0.2500 0.2000
x = 3;
num = x .^ v
num = 1×5
3 9 27 81 243
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##### 2 CommentsShowHide 1 older comment
Image Analyst on 25 Jan 2023
Here is it in more steps than needed just to show you each step involved.
% Call the function with x=10 and n=5
output = e(10, 5)
%-------------------------------------------------------------------
% function definition:
function output = e(x, numberOfTerms)
v = 0 : numberOfTerms
denom = factorial(v)
denom = 1 ./ denom
numerator = x .^ v
output = numerator ./ denom
output = sum(output)
end

Walter Roberson on 25 Jan 2023
format long g
syms x n m
result = symsum(x^n/factorial(n), n, 0, m)
result =
limit(result, m, inf)
ans =
result20 = subs(result, m, 20)
result20 =
exp20 = subs(result20, x, sym(pi))
exp20 =
exp20_numeric = double(exp20)
exp20_numeric =
23.1406926321509
exact = exp(sym(pi))
exact =
exact_numeric = double(exact)
exact_numeric =
23.1406926327793
exact_numeric - exp20_numeric
ans =
6.28368468369445e-10

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