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.
3. Confidence. In the world of superheroes, anything is possible. All that dreamed-up play is great exercise for the brain and the imagination. Parents who allow their children to indulge in the make-believe world of superheroes will find their offspring have higher levels of confidence and competence, says Jiwani.4. Helpfulness.ecoming a superhero in their play allows them to access some sense of power, explains Bailey. It can help them act out and process any inner turmoil and sense of powerlessness that they have. This can help children to resolve issues of power and control, and it allows them to resolve or reduce fears and anxiety.