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Find a and b to make this continuos?
2/(x+2) x<-4
mx+b -4<x>4
x-4/(sqrt(x)-2) x>4
I know you have to find the limits at each point. So
lim x--> -4- =2/-4+2=-1
Should be lim x-->-4+ =mx+b=-1 We sub in the -4 but not sure how to simplify from there.
For the second you would simplify the radical by multiplying top and bottom by sort(x)+2. = (x-4)(sort(x)+2/(x+2).
Is this on the right track?
1 Answer
- ted sLv 76 years ago
YES...and type - 4 < x < 4 , not -4 < x > 4...which means nothing...but your work on the bottom is not correct
