Question Number 123716 by Engr_Jidda last updated on 02/Jan/21
Commented by Dwaipayan Shikari last updated on 27/Nov/20
$${What}\:{is}\:{B}_{{n}} \:{here}? \\ $$
Commented by Engr_Jidda last updated on 27/Nov/20
$${is}\:{a}\:{sturm}−{livoules}\:{function}\:{sir}. \\ $$