Let a⊆r, let f: a⟶r and let c∈r be a cluster point of a. if lim┬(x⟶c)⁡f exists, and if |f| denotes the function defined for x∈a by |f|(x)≔|f(x)|, prove that |lim┬(x⟶c) |⁡f |=|lim┬(x⟶c)⁡|f|

Answer with Step-by-step explanation:

We are given that

Let f:

be  a cluster point of A.

exist let

If denotes the function and

for

We have to prove that

Substitute the value then we get

Hence proved.

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have