Here you go:
a = -1; % Create Data
b = 5; % Create Data
u = @(x,t) exp(a.*t+b.*x); % Create Anonymous Function From Your Function
x = linspace(0, 1, 50); % 50-Element Vector For ‘x’
t = linspace(0, 1, 50); % 50-Element Vector For ‘t’
[X,T] = meshgrid(x,t); % Create Grids For ‘x’ & ‘t’
Z = u(X,T); % Compute Result
figure(1)
surf(X, T, Z)
xlabel('x');
ylabel('t')
zlabel('u(x,t) = exp(a\cdott + b\cdotx)')
grid on
It is necessary to create an anonymous function from your function (see the section under Function Basics for Anonymous Functions, and using vectorised operations, see Array vs. Matrix Operations), then create grids for ‘t’ and ‘x’, and evaluate them as ‘Z’. Then plot them.
