Need help with graphs (1 Viewer)

[Andy005]

Sketch the graph y=(x+1)^4/x^4+1. Use this graph to find the set of values of the real number k for which the equation (x+1)^4=k(x^4+1) has two real distinct roots.

I sketched the graph, but I don't understand what I should do after.

Thanks for your assistance.

 

[fan96]

(This equation is equivalent to the one before it, because for all .

If this equation has two distinct real roots, what could be said about the graphs of

Spoiler

Consider the intersections of the graphs.

 

[darkk_blu]

Find the values for y=k intersects the graph two times (you can do this visually)