In the case of a 2 Ã 2 matrix, the specific formula for the determinant is simply the upper left element times the lower right element, minus the product of the other two elements.
Before you buy any extended warranty... An extended warranty should not be a rush purchase! Before buying any extended warranty, read the contract carefully. Be sure you understand what is and what is not covered, where you can have your car repaired, and whether there are any deductibles or limits on your coverage.emember, you do not need to purchase your extended warranty from the dealership. If your dealer tells you that you cannot obtain financing without buying an extended warranty or that you can only buy an extended warranty when you purchase the car, it's time to find a new dealer.
Buying an extended warranty when you purchase your vehicle lets you fold the cost of the warranty into the vehicle's financing. Instead of laying out a lot of cash in one lump sum, you can finance and see just a small bump in your monthly car payment.s with car insurance, you can choose extended warranty plans with different deductibles and levels of coverage. Generally speaking, most extended warranties offer three coverage levels. The first level pertains to the powertrain, while the second adds coverage for more components.