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.
Myth School. âTo control the Future, one must look to the Past.â. Myth is imagination. The power of the mind, and everything it can create, drives Myth Magic. It is illusion and dreams made real. If the Wizard can conceive it, it can be brought forth and even brought to life. Beware, though, for when imagination becomes too fanciful and whimsical, dreams can escape control and run wild.