The expression ln (1 + x) is an important expression in mathematics. It shows
up surprisingly at many places [2, 4, 5, 6]. Generally, we approximate ln (1 + x)
through a finite sum of an infinite series [3]. But, the number of terms in a finite
sum can make the algebra very complicated. Thus, we develop some simple but
robust closed form approximations to ln (1 + x) through quadrature rules.