What is the price P today of a $130,000 182-day Canadian T-Bill if its quoted yield is 9.65%?

Answer: $124031.86

Find the dP/di the derivative of the previous result from Problem #4 above, with respect to the quoted yield i. Use this derivative to approximate the change in the price of the T-Bill if the yield were to have decreased by 0.002 (i.e. 0.2%) immediately after the T-Bill was purchased.