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.
Extended car warranties. An extended car warranty will prolong the original warranty period or extend the mileage limit. For instance, a standard warranty might be three years or 36,000 miles, but a car buyer could extend that warranty to ten years or 100,000 miles if desired. Sometimes buyers have specific reasons for purchasing the extended warranty. This is especially the case for luxury car owners because luxury car parts tend to be more costly than parts for non-luxury vehicles. While extended car warranties can provide peace of mind, some believe such warranties are often unnecessary and rarely needed.