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.
What is a car warranty? A car warranty, also known as mechanical breakdown insurance (MBI), provides cover against defined mechanical problems that might affect your vehicle. Read more in our beginners' guide to car warranties. Policies typically last from one to five years, or mileage limits could apply. The car warranty options available will depend on whether you're buying a new car, a used car, or if you want a warranty for your current vehicle. This can vary, so check the terms and conditions of your policy carefully.