How to write exponential integral in equation?

How can I write above equation in matlab code, where E1 is exponential integral.

Answer 1

[Ameer Hamza]

You can use expint() function

N = 1;
U = 2;
r = log2(exp(1))*exp(N/U)*expint(N/U)

Result

>> r
r =
    1.3315

If you have symbolic toolbox, you can write the symbolic expression

syms U N
r = log2(exp(sym(1)))*exp(N/U)*expint(N/U)

Result from the live script

[Dhawal Beohar]

Thank you for the help Ameer !