Question

( frac{cos ^{2} 1-x^{2}}{1-gamma^{2}} )
( frac{a}{15}=1+gamma )
( frac{1+gamma}{1-gamma}=3 )
( 1+gamma=3-3 gamma )
( 4 gamma=2 )
( gamma=1 / 2 )
( a=3 / 2 )

# 8. (a) If the sum of an infinite GP be 3 and the sum of the squares of its term is also 3, then find its first term and common ratio

Solution