||'''Book'''|| Modern Physics ||
 ||'''Author'''|| Kennith Krane ||
 ||'''Edition'''|| Second  ||

/* code_begins */

{{{
var('r')
a=0.529e-10
x=r/a
prob_n2_l1=0.125*integrate((4*x**2-4*x**3+x**4)*e**(-x),x,0,1)
prob_n2_l2=0.125/3*integrate((x**4)*e**(-x),x,0,1)
}}}

/* code_ends */

 * '''Solution by''': 
   * Sabareesh Nikhil C, Student, IIT Bombay