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.
You purchased one of the many âadd-onâ products that dealers try to sell with every new car purchase to try to boost their profits. An extended warranty isnât really a warranty at all. Itâs actually a service contract for providing repairs, maintenance or both on your car after the manufacturerâs car warranty expires. It is fairly common for extended warranties to have a small deductible and to exclude certain items, so you may have actually been presented with a decent service agreement.