Problem #5: Find of 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. Problem #5: Find of 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