Indices: Change of Notation 2

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Ben McGovern

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3 years, 9 months ago

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Ben McGovern 2 years, 7 months ago

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Ben McGovern 3 years, 9 months ago

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Ben McGovern 4 years, 10 months ago

Created this as a copy of Indices: Change of Notation 1.

Name	Status	Author	Last Modified
Surds: Simplifying Expressions 1a	Ready to use	Ben McGovern	15/08/2023 15:04
Surds: Simplifying Expressions 1b	Ready to use	Ben McGovern	15/08/2023 15:04
Surds: Simplifying Expressions 2b	Ready to use	Ben McGovern	15/08/2023 15:49
Surds: Simplifying Expressions 2a	Ready to use	Ben McGovern	15/08/2023 15:49
Surds: Simplifying Expressions 3a	Ready to use	Ben McGovern	15/08/2023 15:31
Surds: Simplifying Expressions 3b	Ready to use	Ben McGovern	15/08/2023 15:14
Surds: Simplifying Expressions 4a	Ready to use	Ben McGovern	15/08/2023 15:29
Surds: Simplifying Expressions 4b	Ready to use	Ben McGovern	15/08/2023 15:26
Surds: Simplifying Expressions 4c	Ready to use	Ben McGovern	15/08/2023 15:50
Surds: Simplifying Expressions 5a - Rationalising the Denominator	Ready to use	Ben McGovern	15/08/2023 15:55
Surds: Simplifying Expressions 5b - Rationalising the Denominator	Ready to use	Ben McGovern	15/08/2023 16:07
Surds: Simplifying Expressions 6 - Rationalising the Denominator	Ready to use	Ben McGovern	21/09/2022 16:31
Surds: Simplifying Expressions 7 - Rationalising the Denominator	Ready to use	Ben McGovern	21/09/2022 16:31
Quadratics: Using the Quadratic Formula	Ready to use	Ben McGovern	14/09/2022 16:14
Quadratics: Factorisation 1	Ready to use	Ben McGovern	14/08/2023 15:01
Quadratics: Factorisation 2	Ready to use	Ben McGovern	14/08/2023 15:14
Quadratics: Completing the Square 1	Ready to use	Ben McGovern	14/08/2023 14:59
Quadratics: Completing the Square 2	Ready to use	Ben McGovern	14/09/2022 16:03
Quadratics: Interpreting the Discriminant	Ready to use	Ben McGovern	14/09/2022 16:08
Quadratics: Factorisation 3 - Difference of 2 squares	Ready to use	Ben McGovern	14/08/2023 15:33
Indices: Simplification 1a	Ready to use	Ben McGovern	26/06/2023 12:12
Indices: Simplification 1b	Ready to use	Ben McGovern	26/06/2023 14:31
Indices: Simplification 1c	Ready to use	Ben McGovern	26/06/2023 14:30
Indices: Simplification 2a	Ready to use	Ben McGovern	26/06/2023 14:33
Indices: Simplification 2b	Ready to use	Ben McGovern	26/06/2023 14:36
Indices: Simplification 3a	Ready to use	Ben McGovern	26/06/2023 14:37
Indices: Simplification 3b	Ready to use	Ben McGovern	26/06/2023 14:40
Indices: Change of Notation 1	Ready to use	Ben McGovern	15/08/2023 11:43
Indices: Change of Notation 2	Ready to use	Ben McGovern	15/08/2023 11:51
Indices: Change of Notation 3	Ready to use	Ben McGovern	15/08/2023 11:54
Solve Quadratics - Factorisation 1	Ready to use	Ruth Hand	14/08/2023 15:44
Quadratics: Solving a Quadratic Equation	Ready to use	Ben McGovern	09/12/2022 16:45
Quadratics: Solving by Factorisation	Ready to use	Ben McGovern	14/09/2022 16:25
AD2 Quadratics - solve	Ready to use	Megan Oliver	09/04/2024 15:13
AD5 Difference of two squares	Ready to use	Megan Oliver	09/04/2024 15:14
AA2 Indices - divide	Ready to use	Andrew Neate	09/04/2024 15:00
AA4 Indices - Fractional 2	Ready to use	Andrew Neate	09/04/2024 15:01
AA3 Indices - Fractional 1	Ready to use	Andrew Neate	09/04/2024 15:01
AA1 Indices - times	Ready to use	Andrew Neate	28/03/2024 13:17
Calculation with indices - times	Ready to use	Will Morgan	26/06/2024 11:53
Calculation with Indices - divide	Ready to use	Will Morgan	26/06/2024 12:07

There are 209 other versions that do you not have access to.

Question statement

Rewrite the following expression as a single term in the form $x^n$ , writing $n$ as an integer or a fraction

$\frac{\sqrt[\var{m}]{x^\var{n}}}{\sqrt[\var{p}]{x^\var{q}}}$

$\simplify{root(x^{n},{m})/root(x^{q},{p})}$

Give any introductory information the student needs.

			Name	Type	Generated Value

n	integer	2
m	integer	10
p	integer	9
q	integer	4

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xxxxxxxxxx
 
random(2..10)

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Generated value: `integer`

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Advice

To rewrite $\frac{\sqrt[\var{m}]{x^\var{n}}}{\sqrt[\var{p}]{x^\var{q}}}$ in the form $x^n$ , we need to use the following rules:

$\sqrt[n]{a} = a^{1/n}$ ;
$\left(a^n\right)^m = a^{n \times m}$ ;
$\frac{a^n}{a^m} = a^{n-m}$ .

Applying rule 1 to the numerator and denominator:

$\dfrac{\sqrt[\var{m}]{x^\var{n}}}{\sqrt[\var{p}]{x^\var{q}}} = \dfrac{\left(x^\var{n}\right)^\simplify[fractionNumbers]{{1/m}}}{\left(x^\var{q}\right)^\simplify[fractionNumbers]{{1/p}}}.$

Then applying rule 2:

$\begin{split}\dfrac{\left(x^\var{n}\right)^\simplify[fractionNumbers]{{1/m}}}{\left(x^\var{q}\right)^\simplify[fractionNumbers]{{1/p}}} &\,= \dfrac{x^{\var{n} \times \simplify[fractionNumbers]{{1/m}}}}{x^{\var{q} \times \simplify[fractionNumbers]{{1/p}}}} \\ &\,= \dfrac{x^{\simplify[fractionNumbers]{{n/m}}}}{x^{\simplify[fractionNumbers]{{q/p}}}}. \end{split}$

Finally applying rule 3 and simplifying:

$\begin{split} \dfrac{x^{\simplify[fractionNumbers]{{n/m}}}}{x^{\simplify[fractionNumbers]{{q/p}}}} &\,= x^\simplify[fractionNumbers,!collectNumbers]{{n/m}-{q/p}} \\ &\,= x^\simplify[fractionNumbers]{{n/m-q/p}} \end{split}$

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This question is used in the following exams:

Indices by Ben McGovern in MASH Bath: Moodle quizzes and TS.
All the good stuff by Chris Templet in Chris's workspace.
Summer Quiz 2 by Kate Vincent in Kate's workspace.
ASSIGNMENT DUE 21ST JULY 2023 AT 11:53:13 by Martin Jarvis in Martin's workspace.
New Exam by Ben Tito in Ben's workspace.
Testing of the website by Manpreet Singh in Manpreet's workspace.
Indices 2 by Luke Middleton in Luke's workspace.
TRIAL TEST by Trish Mpofu in Trish's workspace.
EC1602 NUMBAS 2 by samira Al-Moustafa in samira's workspace.

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Ben McGovern 2 years, 7 months ago

Ben McGovern 3 years, 9 months ago

Ben McGovern 4 years, 10 months ago

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Indices: Change of Notation 2

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

Feedback

History

Comment

Checkpoint description

Ben McGovern 2 years, 7 months ago

Ben McGovern 3 years, 9 months ago

Ben McGovern 4 years, 10 months ago

Error in variable testing condition

Error

Warning

Generated value: integer

Parts

Mathematical expression

Advanced settings

Checking accuracy

Variable value generators

Pattern restriction

Variables

String restrictions

Generated value: `integer`