Question
Differentiate : y=(2x^2+1nsqrt (x)) lim _(xarrow 1)(x^3-1)/(x^2)-1 lim _(xarrow 3)((vert x-3vert )/(x-3))
Solution
4.6
(209 Votos)
Ana Clara
Especialista · Tutor por 3 anos
Resposta
Let's go through each limit step by step.### 1. Differentiate \( y = 2x^2 + \ln(\sqrt{x}) \)First, rewrite the function for easier differentiation:
Now, differentiate
with respect to
:
### 2. Evaluate
Factor the numerator and denominator:
Cancel the common factor \((x - 1)\):
Now, evaluate the limit as
:
### 3. Evaluate
Consider the definition of the absolute value:- For
,
- For
, \( |x - 3| = -(x - 3) = 3 - x \)Since we are approaching
from the right (i.e.,
),
:
For
, \( |x - 3| = -(x - 3) \):
Since the left-hand limit and the right-hand limit are not equal, the two-sided limit does not exist.### Summary1. The derivative of \( y = 2x^2 + \ln(\sqrt{x}) \) is:
2. The limit
is:
3. The limit
does not exist because the left-hand limit and the right-hand limit are not equal.