Error using ==> fprintf Function is not defined for 'sym' inputs

Question

This is my MATLAB code. The function trapezoidal() is defined separately and it works fine.

syms x;

f = 10 + 2 * x - 6 * (x^2) + 5 * (x^4);

a = 0;
b = 2;

ans_         


        

Answer 1

The problem is in using the function int

actual_ans = int(f, 0, 2);

`actual_ans' is still a symbolic variable, even if it is a constant. You can translate it into a numeric variable with

actual_ans = double(actual_ans);