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.
This laughed-at notion is becoming increasingly acceptable as technological advances are blurring the boundaries between reality and illusion. There is now not one but three different flavors of synthetic reality: Virtual Reality (VR), Augmented Reality (AR) and Mixed Reality (MR). But thereâs a lot of confusion about what each version of reality is. This is something that is akin to evolving technologies.