The function is a continuous function at 2 if the LHL and RHL will be the same as the limit of the function.
<h3>What is continuity of a function?</h3>It is defined as the property of a function in which the function varies continuous, and we plot the graph of a function it doesn't break.
We have a function:
If f(x) is a continuous, then it will follow:
f(2) = 2² - 2 = 4 - 2 = 2
Left-hand limit at 2 = right-hand limit at 2 = 2
Limit at 2 of a function = 2
Using limit, we can check the whether the function is differentiable or not.
Thus, the function is a continuous function at 2 if the LHL and RHL will be the same as the limit of the function.
Learn more about the continuous function here:
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Answer:
Therefore values of a and b are
Step-by-step explanation:
Rewrite in the form
where a and b are integers,
To Find:
a = ?
b = ?
Solution:
..............Given
Which can be written as
Adding half coefficient of X square on both the side we get
...................( 1 )
By identity we have (A - B)² =A² - 2AB + B²
Therefore,
Substituting in equation 1 we get
Which is in the form of
On comparing we get
a = 3 and b = 2
Therefore values of a and b are
Answer:
the standard deviation increases
Step-by-step explanation:
Let x₁ , x₂, . . . , x₂₃ be the actual data observed by the student
The sample means = x₁ + x₂ + . . . , x₂₃ / 23
= 2.3hr
⇒
let x₁ , x₂, . . . , x₂₃ arranged in ascending order
Then x₂₃ was 10 and has been changed to 14
i.e x₂₃ increase to 4
Sample mean
therefore, the new sample mean is 2.47
2) For the old data set
the median is values
when we use the new data set only x₂₃ is changed to 14
i.e the rest all observation remain unchanged
Hence, sample median = remain unchange
sample median = 2.5hrs
The Standard deviation of old data set is calculated
The new sample standard sample deviation is calculated as
Now, when we compare (1) and (2) the square distance between each observation xi and old mean is less than the squared distance between each observation xi and the new mean.
Since,
(xi - 2.3)² ∑ (xi - 2.47)²
Therefore , the standard deviation increases
