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Prompt the user to enter a vector of coefficients for the polynomial model. Verify that the entry has an even number of elements (an odd number of elements would mean an even order polynomial). If an invalid vector is entered, prompt the user to re-e

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Cody Abt
Cody Abt 2019-10-6
回答： darova 2019-10-6
My code. I know how to prompt the user but I dont understand how to verify thier entry has even elements. I struggle on coding
n=1;
while n>=1
V(n)=(V(n-1)-(T(V(n-1))/(T(V(n-1))))); %the newton raphson
p=input('enter a vector of cofficients for an odd-order polynomial:');
n = length(p);
if n==3
V=p();
polyval(polyder(T),V(n))
elseif n==5
V=p();
polyval(p,V)
elseif n==7
V=p();
polyval(p,V)
else
warning('Adjust paremeters')
end
end

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回答（1 个）

darova
darova 2019-10-6
Use mod() function
a = mod(b,a); % a=1 if b is odd

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