exponential integral function वाक्य

उदाहरण वाक्य

1. The first term li ( " x " ) is the usual logarithmic integral function; the expression li ( " x " ? ) in the second term should be considered as Ei ( ? ln " x " ), where Ei is the analytic continuation of the exponential integral function from positive reals to the complex plane with branch cut along the negative reals.