Match List-I with List-II
| List-I (Definite integral) | List-II (Value) |
|---|---|
| (A) | (I) 2 |
| (II) | |
| (C) | (III) |
| (D) | (IV) 0 |
Choose the correct answer from the options given below:
Correct Answer :
(A) - (III), (B) - (IV), (C) - (I), (D) - (II)
Solution :
The correct option is (A) - (III), (B) - (IV), (C) - (I), (D) - (II).
Let us evaluate each definite integral in List-I step-by-step to find its corresponding value in List-II.
1. Evaluation of Integral (A):
The integral is:
To solve this, we can use the method of substitution. Let:
Differentiating both sides with respect to gives:
Next, we determine the new limits of integration:
When , .
When , .
Substituting these values into the integral, we get:
Integrating yields:
Since , we have:
Thus, (A) matches with (III).
2. Evaluation of Integral (B):
The integral is:
Let us analyze the integrand function:
We test whether is an odd or even function by replacing with :
Since and , we obtain:
Because , the integrand is an odd function.
By the properties of definite integrals, any integral of an odd function over symmetric limits is zero:
Therefore:
Thus, (B) matches with (IV).
3. Evaluation of Integral (C):
The integral is:
Evaluating the antiderivative of gives:
Knowing that and , we compute:
Thus, (C) matches with (I).
4. Evaluation of Integral (D):
The integral is:
We use the standard integration formula:
Setting , our integral becomes:
Now we apply the limits of integration:
Simplifying the fractions:
Using the logarithmic property :
Thus, (D) matches with (II).
Conclusion:
By matching all items, we obtain:
(A) - (III), (B) - (IV), (C) - (I), (D) - (II).
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