Maciej P. joined Socratic
2 years ago.
Maciej P. hasn't written a biography yet.
6,973
karma
· Poland
Recent collaborators
Activity43 Answers72 Edits4 Asked
@maciej-p
Maciej P.
commented
The answer is almost right. I must say about problem with extraneous solutions which appears in all these examples. When raising a radical equation (or any equation) to even power we must always check if the solutions we get are solutions to the original equation.
Here we deal with with the function of the form #y=sqrt(x-b)+c#. It's graph is the upper half of parabola on its side. The anwer fine for considering full parabola. But here we must check if the points of intersection are above the vertex, because anything below doesn't count, doesn't belong to the **domain**.
on
How to solve worded questions involving gallery of graphs?