why can I not integrate the function I just created? In Matlab?

PPS VE EDITOR Insert Comment % Indent PUBLISH fx Ed Go To Find - Run Section Advance 0 Run and Breakpoints Run Run and Adance Time NAVIGATE BREAKPORTS adolf Desktop Comp App CEE MATLAB Editor - Usersvador Desktop Comp App CEE MATLAB\data_function.m data_function. m x + *w = TTCI; TIME - W:,2); DUWN TTC = w[:, 33); ation and ODE-1.pdf plot (TIME, TTC); Q function t1 = data_function() y = -0.005x^4 + 4.9**.^3 - 1800**.*2 + 300000*x - 19000000; Y 9 10 - 11 - 12- 13 (14- 15 - end syms x int(data_function, X, 241, 243) Command Window >> data_function Error: Fils: data function.m Line: 14 Column: 1 This statement is not inside any function. (It follows the END that terminates the definition of the function data function". fx >>