f = @(x) asin(2.*sin(x)) + sqrt(cos(x).*(exp(x))) + sqrt(-x).*(abs(x).^(x/log(x + 1)))
x = -2*pi:0.0001:2*pi
y = f(x)
U = real(y)
V = imag(y)
cla;
hold on;
plot(x,U,'-','Color',[.1 .7 .7],'LineWidth',3)
plot(x,V,'-.','Color',[.1 .4 .1],'LineWidth',3)
legend('Im(f(x))','Re(f(x))',1)
disp(f(3.4))
disp(f(5.0))