Explain why each of the following integrals is improper. (a) \int_6^7 \frac{x}{x-6}dx -Since the integral has an infinite interval of integration, it

Ramsey

Ramsey

Answered question

2021-06-12

Explain why each of the following integrals is improper.
(a) 67xx6dx
-Since the integral has an infinite interval of integration, it is a Type 1 improper integral.
-Since the integral has an infinite discontinuity, it is a Type 2 improper integral.
-The integral is a proper integral.
(b)011+x3dx
Since the integral has an infinite interval of integration, it is a Type 1 improper integral.
Since the integral has an infinite discontinuity, it is a Type 2 improper integral.
The integral is a proper integral.
(c) x2ex2dx
-Since the integral has an infinite interval of integration, it is a Type 1 improper integral.
-Since the integral has an infinite discontinuity, it is a Type 2 improper integral.
-The integral is a proper integral.
d)0π4cotxdx
-Since the integral has an infinite interval of integration, it is a Type 1 improper integral.
-Since the integral has an infinite discontinuity, it is a Type 2 improper integral.
-The integral is a proper integral.

Answer & Explanation

Tasneem Almond

Tasneem Almond

Skilled2021-06-13Added 91 answers

a) 
Consider the integral 67xx6dx 
It is incorrect because to the discontinuity at x=6.
The integral is a type 2 improper integral because it contains an infinite discontinuity.
b) Let us consider the integral 0dx1+x3 
due to the integral's unbounded integration window. That is (0,) and it is an improper integral of type 1.
c) 
Consider the integral x2ex2dx 
due to the integral's infinite integration window. That is (,) 
It is Type 1 improper integral. 
d) 
Consider the interval 0π4cotxdx 
It is improper because it is discontinuous at x=0 
The integral is a type 2 improper integral because it has an infinite discontinuity.

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