Of course you can use the quotient rule, but it is usually not the easiest method. If we do use it here, we get $${d\over dx}{10\over x^2}={x^2\cdot 0-10\cdot 2x\over x^4}= {-20\over x^3},$$ since the derivative of 10 is 0.
1 Young children can't tell the difference between fantasy and reality. 2  Your preschooler's rich imagination is a big part of his normal development, but that means it is usually hard for him to tell the difference between what's real and what's imaginary.
The difference between fantasy and science fiction. The difference between the fantasy and science fiction genres hasnât always been an issue, as the Science Fiction and Fantasy Writers of America points out. However, there are a few key differences in the genres that can help us to separate one type of book from the other in the âscience fiction vs fantasyâ debate.