please give me answer what is wrong

[현국 조]

Answer 1

[DGM]

Use elementwise division.

x = 0:0.1:103;
y = ((28*log(x) - 2*x - 12*x.^2.*log(x) - 4*x.^3.*log(x) - 12*x.*log(x) - 2*x.^2 - (2*x.^3)/3 + 206/3).^(1/2)-8) ...
    ./(6*log(x) + 1);

plot(x,y)

Warning: Imaginary parts of complex X and/or Y arguments ignored.

[현국 조]

really thanks!!