# Find d²y/dx² in terms of t if x= (1-t²)/(1+t²) and y=t/(1+t²)?

##### 2 Answers

Aug 25, 2015

#### Explanation:

First find

This would give

Since

=

Aug 28, 2015

#### Explanation:

It is like this:

It was derived that

Now, from the given equations, it is evident that