Please explain how to compute the duration. Thank you very much!

3. Suppose there is a bond with a 15% yield, 12% coupon rate, $1,000 face value, and 1.5-year maturity. Compute the duration, convexity measure, duration-implied prices, and duration-and-convexity implied prices for this bond. (30 points.) (Note: I recommend calculating the true duration and convexity, then using numerical derivatives to double-checl that your duration and convexity estimates are correct.) 3. Suppose there is a bond with a 15% yield, 12% coupon rate, $1,000 face value, and 1.5-year maturity. Compute the duration, convexity measure, duration-implied prices, and duration-and-convexity implied prices for this bond. (30 points.) (Note: I recommend calculating the true duration and convexity, then using numerical derivatives to double-checl that your duration and convexity estimates are correct.)