%file name - first_order_linear_differential_equations.m
syms y(z);
ode = diff(y,x) == 2*x; % define the differential equation
cond = y(0) == 3; %initial condition
ySol(x) = dsolve(ode,cond);
% run the programe
% type the ySol(x) in the command window and ENTER
%you get the answer