Granica COD: Oblicz granice ciagu: (1−¹_2²)(1−¹_3²)*...*(1−¹_n²) jesli nie byloby widac to jest tam (1− 1/2²)(1−1/3²)*...*(1−1/n²)

+-:

	1		n2−1
an=1−		=
	n2		n2

n²−1 → 3*8*15*24*35*48*63*....=1*3*2*4*3*5*4*6*5*7*6*8*7*9.....= 1*2*3*4*5*6*7..*3*4*5*6*7*8*9= n!*n!/2 n² =n*n →(1*2*3*4*..)*(1*2*3*4*..)=n!*n!

	1
lim....=
	2