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.
If you have recently purchased a newer used car you may actually have a factory warranty still in place. For most vehicles, the factory warranty is a 3-year/36,000 mile warranty, but some like the Rolls Royce will cover four years and up to 999,999 miles for the first four years. Some cars will not allow the factory warranty to be transferred and some will charge a small transfer fee if the car is sold.