Lesson 5.3-5.4
5.3-5.4 Mean values and integration by partial fractions Quiz: Pearson Edexcel Further Maths, Unit 5
20 questions
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Lesson 5.3-5.4, Mean values and integration by partial fractions: 20 multiple choice questions for the Pearson Edexcel Further Maths (9FM0), Unit 5: Further calculus, written with Revision Ninja.
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The 20 questions
-
What is the mean value of a function f over the interval [a, b]?
- The integral from a to b of f(x) dx alone
- (1/(a + b)) times the integral from a to b of f(x) dx
- (1/(b - a)) times the integral from a to b of f(x) dx
- (b - a) times the integral from a to b of f(x) dx
-
What is the purpose of partial fractions when integrating a rational function?
- To split the function into simpler terms that are easier to integrate
- To make the denominator into a perfect square so that it cancels
- To convert the integral into a series expansion
- To change the variable so that the integrand becomes periodic
-
For a denominator with two distinct linear factors (x - a)(x - b), what is the standard partial fraction form?
- A/(x - a) + B/(x - b)^2
- A/(x - a)^2 + B/(x - b)^2
- (Ax + B)/((x - a)(x - b))
- A/(x - a) + B/(x - b)
-
For an irreducible quadratic factor ax^2 + c in the denominator, what numerator is used in its partial fraction term?
- A only, a constant
- Ax + B
- A/x + B
- Ax^2 + Bx + C
-
What is the mean value of x^2 over the interval [0, 3]?
- 6
- 1
- 3
- 9
-
What is the mean value of 2x over the interval [1, 3]?
- 2
- 4
- 8
- 6
-
What is the mean value of sin x over the interval [0, pi]?
- 2/pi
- 1
- 1/pi
- pi/2
-
What is the mean value of e^x over the interval [0, 1]?
- e - 1
- e
- 1/(e - 1)
- 1
-
What is the mean value of 1/x over the interval [1, e]?
- 1/e
- 1/(e - 1)
- 1
- e - 1
-
What is the partial fraction decomposition of 1/((x - 1)(x + 2))?
- (1/3)(1/(x - 1) - 1/(x + 2))
- (1/3)(1/(x - 1) + 1/(x + 2))
- 1/(x - 1) - 1/(x + 2)
- (1/3)(1/(x + 1) - 1/(x - 2))
-
What is the partial fraction decomposition of (3x + 5)/((x + 1)(x + 2))?
- 2/(x + 1) + 1/(x + 2)
- 2/(x + 1) - 1/(x + 2)
- 1/(x + 1) + 2/(x + 2)
- 3/(x + 1) + 5/(x + 2)
-
What is the value of the integral from 0 to 1 of 1/((x + 1)(x + 2)) dx?
- ln(2/3)
- ln(4/3)
- ln 2
- ln(3/4)
-
What is the value of the integral from 2 to 3 of 1/((x - 1)(x + 2)) dx?
- (1/3) ln(5/8)
- ln(8/5)
- (1/3) ln(8/5)
- (1/3) ln 2
-
What is the value of the integral from 0 to 1 of (3x + 5)/((x + 1)(x + 2)) dx?
- ln 6
- ln 4
- ln 3
- ln(3/2)
-
Which expression is an antiderivative of 1/(x(x^2 + 1))?
- ln|x| + ln(x^2 + 1)
- (1/2) ln|x| - ln(x^2 + 1)
- ln|x| - (1/2) ln(x^2 + 1)
- arctan x
-
For (x + 3)/((x - 2)(x + 1)), which partial fraction decomposition is correct?
- 5/(3(x - 2)) - 2/(3(x + 1))
- 2/(3(x - 2)) - 5/(3(x + 1))
- 5/(3(x - 2)) + 2/(3(x + 1))
- 1/(x - 2) + 1/(x + 1)
-
Which partial fraction decomposition is correct for 2/((x + 1)(x^2 + 1))?
- 1/(x + 1) + (1 + x)/(x^2 + 1)
- 1/(x + 1) + (1 - x)/(x^2 + 1)
- 2/(x + 1) + (1 - x)/(x^2 + 1)
- 1/(x + 1) + 1/(x^2 + 1)
-
Find c in [1, 3] such that f(c) equals the mean value of f(x) = x^2 on [1, 3].
- c = sqrt(13)
- c = 13/6
- c = sqrt(13/3)
- c = 2
-
What is the mean value of 1/x^2 over the interval [1, 2]?
- 3/2
- 1
- 1/4
- 1/2
-
What is the value of the integral from 3 to 5 of 1/(x^2 - 1) dx?
- (1/2) ln(3/4)
- (1/2) ln 2
- ln(4/3)
- (1/2) ln(4/3)
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