Answer and Explanation:
Given function
S(t) =2t/t²+1 where t > 0
and fund accumulates with a varying force of interest.
and $100,000 is deposited at time 2.
Number of years it will take from the time of deposit for the fund to double,
Substituting t in the formula given that t is 1 because t>0 and deposit begins to grow from time of deposit 2
= S(t)= 2*1/1² + 1=1
Therefore time it will take for funds to double is 1 year from time of deposit
