Ex 7.1 A laser surgical tool has a cost basis of $200,000 and a five-year depreciable life. The estimated salvage value is $20,000 at the end of five years. a) Calculate dk and BVk for years 1-5 i. Double declining balance method ii. Double declining balance method with switchover to SL ii MACRS b) Calculate the PW of the total depreciation at i. 1% ii, i::396 iii. i-5%