Lim (b-x) is
x→b √(x)-√(b)
a)-2√(b)
b)-√(b)
c)√(b)
d)2√(b)
My work:
Lim (b-x) * √(x)+√(b)
x→b √(x)-√(b) √(x)+√(b)
Lim (b-x) (√(x)+√(b))
x→b x+b
But I get lost along this path and don't know how to continue to attain one of the answers.
The answer is supposed to be A but I don't know how to get to it.
x→b √(x)-√(b)
a)-2√(b)
b)-√(b)
c)√(b)
d)2√(b)
My work:
Lim (b-x) * √(x)+√(b)
x→b √(x)-√(b) √(x)+√(b)
Lim (b-x) (√(x)+√(b))
x→b x+b
But I get lost along this path and don't know how to continue to attain one of the answers.
The answer is supposed to be A but I don't know how to get to it.