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Moved from a technical forum, so homework template missing
what value of the constants a and b if the following limit exists
lim (ax + |x + 1|)|x + b − 2| |x + 1|
x→−1
|x|= x for x≥ 0 and |x|= -x for x<0
|x+1|= x+1 for x≥ -1 and |x+1|= -(x+1) for x<-1
I don't know how to determine |x + b − 2| is positive or negative.
i know that if limit exists, lim x→ −1 ^- f(x) =lim x→ −1 ^+ f(x)
but i cannot cancell the factor x + 1
lim (ax + |x + 1|)|x + b − 2| |x + 1|
x→−1
|x|= x for x≥ 0 and |x|= -x for x<0
|x+1|= x+1 for x≥ -1 and |x+1|= -(x+1) for x<-1
I don't know how to determine |x + b − 2| is positive or negative.
i know that if limit exists, lim x→ −1 ^- f(x) =lim x→ −1 ^+ f(x)
but i cannot cancell the factor x + 1