SOLUTION: Piecewise function. f(x)={x+4, x &#8805; 2 and ax^2, x < 2 A. Find the value for "a" so that f(x) is continuous for all real numbers. B. Sketch the graph to verify results fr

Algebra ->  Graphs -> SOLUTION: Piecewise function. f(x)={x+4, x &#8805; 2 and ax^2, x < 2 A. Find the value for "a" so that f(x) is continuous for all real numbers. B. Sketch the graph to verify results fr      Log On


   



Question 1021099: Piecewise function.
f(x)={x+4, x ≥ 2 and ax^2, x < 2
A. Find the value for "a" so that f(x) is continuous for all real numbers.
B. Sketch the graph to verify results from part A.

Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


For any value of where , regardless of the value of . There are a couple of basic limit theorems that you can apply to the segments of this function where , and I'll leave that part of the analysis to you.

Therefore, for this piecewise fuction to be continuous for all reals, it is sufficient to find a number such that when .





And the desired function is:





John

My calculator said it, I believe it, that settles it