Here are the functions:

(G of k)(x) = x^2-1

f(x) = x^2/(x^2+1)

how do i find the intersecrions?

Printable View

- March 15th 2010, 03:02 AMAnemorifinding intersection of two functions
Here are the functions:

(G of k)(x) = x^2-1

f(x) = x^2/(x^2+1)

how do i find the intersecrions? - March 15th 2010, 03:11 AMmr fantastic
- March 15th 2010, 03:18 AMearboth
The values of the functions must be equal at the point of intersection. Thus:

Multiply both sides by to get rid of the fraction and move all terms to the LHS:

This is a quadratic equation in x². Use the substitution . The equation becomes:

Solve for u, afterwards determine x, plug in the value of x in one of the equations of a function to calculate the y-coordinate of the point of intersection.