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Mathematics Lab Activity-20 Class XI
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Mathematics Lab Activity-20 Class XI
Chapter - 12 limits & Derivatives
Activity - 20
Objective
To find analytically
Material Required
White paper , pencil, calculator.
Theory
Procedure
1. Consider a function/given by:
At x = c = 3
2. The function given above is not
defined at x = 3
3.
Take some values of x less than c = 3 and some other values of x more
than x = 3
4. In both cases, the values of x
should be taken very close to c = 3.
5. Calculate the corresponding values of f(x) for values of x less than c = 3 but very close to c = 3 given in table 1 as shown below.
Table : 1
x |
2.9 |
2.99 |
2.999 |
2.9999 |
2.99999 |
2.999999 |
f(x) |
5.9 |
5.99 |
5.999 |
5.9999 |
5.99999 |
5.999999 |
Values of f(x) for values of x greater
than c = 3 are given in table 2:
Table : 2
x |
3.1 |
3.01 |
3.001 |
3.0001 |
3.00001 |
3.000001 |
f(x) |
6.1 |
6.01 |
6.001 |
6.0001 |
6.00001 |
6.000001 |
Observations
It is clear from the above tables that:
1. Values of f(x) as x → 3 from the left, as in table 1 are coming
closer and closer to 6.
2. Values of f(x) as x → 3 from the right, as in table 2 are coming closer and closer to 6,
3. From table 1 and 2, we find that,
4. Also by using the formula we get
Result
Applications
This activity can be used to
demonstrate the concept of , when f(x) is not defined at x = c
VIVA – VOICE
Q. 1. What is the value
of ?
Ans. 1.
Q.2. What is the value of ?
Ans. 1.
THANKS FOR YOUR VISIT
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