why am I getting the error Incorrect Number or Types of Inputs or Outputs for Function
my code is; syms d; s=solve('7*d + 3*e=71','d + 2*e=20'); s=[s.d s.e]; disp('1 dollar = '); s(1) disp('Eullar'); I am getting the error: Incorrect number or types of inputs or outputs for function 'solve'. Error in HW10 (line 2) s=solve('7*d + 3*e=71','d + 2*e=20'); The qustion I am solving is: "Seven dollars and 3 Euros make 71 Eullars. One dollar and 2 Euros make 20 Eullars. find out the value of a dollar in terms of Eullars"
Prashant Kumar answered .
2025-11-20
For equality inside a symbolic expression, use double equal signs (==) —
syms d e
s=solve(7*d + 3*e == 71,d + 2*e == 20);
s=[s.d s.e];
disp('1 dollar = ');
1 dollar =
vpa(s(1),3)
ans = 7.45
disp('Eullar');
Eullar
The ability to use character arrays has been removed (depricated). Although ‘e’ was not included in the syms call, I assume it is a variable and not the exponential function e that is the exp function. If it should be ‘exp(1)’ (or the exponential function of some other argument), make the appropriate changes in your code.