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.
Auto manufacturers typically provide warranties as part of the overall cost of a new vehicle. These warranties will cover certain car problems and last for a certain number of months or years and miles of driving.In addition, auto dealerships often sell extended warranties.Sometimes, these extended warranties are called service contracts. These extended warranties cover the costs of some unexpected car repairs not covered by the manufacturerâs warranty. They can be very profitable for the dealer and expensive for you.ou should also check whether the coverage of the service contract overlaps with the problems and time periods the manufacturerâs warranty covers to avoid paying for unneeded coverage. You may find that any additional coverage is not worth the additional cost.