Radicals Flashcards
What’s the basic skeleton of a transformed radical function?
y = a√b(x-h) +k
graph of √ f(x) when f(x)<0
y= √ f(x) is undefined, cannot take square root of negative numbers
What’s the mapping notation?
(x,y) –> (x/b-h, k√y+k)
graph of √ f(x) when f(x)=0
The graphs of y= √ f(x) and f(x) intersect at y=0
Invariant points of radicals?
When Y = 0 & 1
the graph of √ f(x) when 0
The graph of y= √ f(x) is above graph of f(x)
The graph of √f(x) when f(x) is one
invariant point y= √f(x) and y = f(x) intersect when Y = 1
The graph of √f(x) when the graph of f(x) > 1
√f(x) is below y=f(x)
If the point (x,y) lies on the graph of f(x), then the image of the point on the graph of y=√f(x) is …
(x, √y)
steps of solving a √ equation algebraically
- identify any restrictions
- isolate radical on one side
- square each side and solve equation
- verify to see any extraneous roots (LS=RS)
Impacts on domain of √f(x) when tranformed
H values and when B=-1
H values show the x value of the endpoint
when B is -1 this is a reflection in the y-axis which changes your alligator
Impacts of range of √f(x) when transformed
K values and A=-1
K value gives the y value of the endpoint
when a is -1 this a reflection in the x-axis which changes the alligator
solving √f(x) graphically
slap it into Y1 and Y2